License

The Apache License, Version 2.0

                               Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

   1. Definitions.

      "License" shall mean the terms and conditions for use,
      reproduction, and distribution as defined by Sections 1 through
      9 of this document.

      "Licensor" shall mean the copyright owner or entity authorized
      by the copyright owner that is granting the License.

      "Legal Entity" shall mean the union of the acting entity and all
      other entities that control, are controlled by, or are under
      common control with that entity. For the purposes of this
      definition, "control" means (i) the power, direct or indirect,
      to cause the direction or management of such entity, whether by
      contract or otherwise, or (ii) ownership of fifty percent (50%)
      or more of the outstanding shares, or (iii) beneficial ownership
      of such entity.

      "You" (or "Your") shall mean an individual or Legal Entity
      exercising permissions granted by this License.

      "Source" form shall mean the preferred form for making
      modifications, including but not limited to software source code,
      documentation source, and configuration files.

      "Object" form shall mean any form resulting from mechanical
      transformation or translation of a Source form, including but
      not limited to compiled object code, generated documentation,
      and conversions to other media types.

      "Work" shall mean the work of authorship, whether in Source or
      Object form, made available under the License, as indicated by a
      copyright notice that is included in or attached to the work
      (an example is provided in the Appendix below).

      "Derivative Works" shall mean any work, whether in Source or
      Object form, that is based on (or derived from) the Work and
      for which the editorial revisions, annotations, elaborations,
      or other modifications represent, as a whole, an original work
      of authorship.  For the purposes of this License, Derivative
      Works shall not include works that remain separable from, or
      merely link (or bind by name) to the interfaces of, the Work
      and Derivative Works thereof.

      "Contribution" shall mean any work of authorship, including
      the original version of the Work and any modifications or
      additions to that Work or Derivative Works thereof, that is
      intentionally submitted to Licensor for inclusion in the Work
      by the copyright owner or by an individual or Legal Entity
      authorized to submit on behalf of the copyright owner. For the
      purposes of this definition,
      "submitted" means any form of electronic, verbal, or written
      communication sent to the Licensor or its representatives,
      including but not limited to communication on electronic mailing
      lists, source code control systems, and issue tracking systems
      that are managed by, or on behalf of, the Licensor for the
      purpose of discussing and improving the Work, but excluding
      communication that is conspicuously marked or otherwise
      designated in writing by the copyright owner as "Not a
      Contribution."

      "Contributor" shall mean Licensor and any individual or Legal
      Entity on behalf of whom a Contribution has been received by
      Licensor and subsequently incorporated within the Work.

   2. Grant of Copyright License. Subject to the terms and conditions
      of this License, each Contributor hereby grants to You a
      perpetual, worldwide, non-exclusive, no-charge, royalty-free,
      irrevocable copyright license to reproduce, prepare Derivative
      Works of, publicly display, publicly perform, sublicense, and
      distribute the Work and such Derivative Works in Source or
      Object form.

   3. Grant of Patent License. Subject to the terms and conditions of
      this License, each Contributor hereby grants to You a perpetual,
      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      (except as stated in this section) patent license to make, have
      made, use, offer to sell, sell, import, and otherwise transfer
      the Work, where such license applies only to those patent claims
      licensable by such Contributor that are necessarily infringed by
      their Contribution(s) alone or by combination of their
      Contribution(s) with the Work to which such Contribution(s) was
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      (including a cross-claim or counterclaim in a lawsuit) alleging
      that the Work or a Contribution incorporated within the Work
      constitutes direct or contributory patent infringement, then any
      patent licenses granted to You under this License for that Work
      shall terminate as of the date such litigation is filed.

   4. Redistribution. You may reproduce and distribute copies of the
      Work or Derivative Works thereof in any medium, with or without
      modifications, and in Source or Object form, provided that You
      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and
          attribution notices from the Source form of the Work,
          excluding those notices that do not pertain to any part of
          the Derivative Works; and

      (d) If the Work includes a "NOTICE" text file as part of its
          distribution, then any Derivative Works that You distribute
          must include a readable copy of the attribution notices
          contained within such NOTICE file, excluding those notices
          that do not pertain to any part of the Derivative Works, in
          at least one of the following places: within a NOTICE text
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          Derivative Works; or, within a display generated by the
          Derivative Works, if and wherever such third-party notices
          normally appear. The contents of the NOTICE file are for
          informational purposes only and do not modify the License.
          You may add Your own attribution notices within Derivative
          Works that You distribute, alongside or as an addendum to
          the NOTICE text from the Work, provided that such additional
          attribution notices cannot be construed as modifying the
          License.

      You may add Your own copyright statement to Your modifications
      and may provide additional or different license terms and
      conditions for use, reproduction, or distribution of Your
      modifications, or for any such Derivative Works as a whole,
      provided Your use, reproduction, and distribution of the Work
      otherwise complies with the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state
      otherwise, any Contribution intentionally submitted for
      inclusion in the Work by You to the Licensor shall be under the
      terms and conditions of this License, without any additional
      terms or conditions.  Notwithstanding the above, nothing herein
      shall supersede or modify the terms of any separate license
      agreement you may have executed with Licensor regarding such
      Contributions.

   6. Trademarks. This License does not grant permission to use the
      trade names, trademarks, service marks, or product names of the
      Licensor, except as required for reasonable and customary use
      in describing the origin of the Work and reproducing the content
      of the NOTICE file.

   7. Disclaimer of Warranty. Unless required by applicable law or
      agreed to in writing, Licensor provides the Work (and each
      Contributor provides its Contributions) on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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      FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for
      determining the appropriateness of using or redistributing the
      Work and assume any risks associated with Your exercise of
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   8. Limitation of Liability. In no event and under no legal theory,
      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and
      grossly negligent acts) or agreed to in writing, shall any
      Contributor be liable to You for damages, including any direct,
      indirect, special, incidental, or consequential damages of any
      character arising as a result of this License or out of the use
      or inability to use the Work (including but not limited to
      damages for loss of goodwill, work stoppage, computer failure or
      malfunction, or any and all other commercial damages or losses),
      even if such Contributor has been advised of the possibility of
      such damages.

   9. Accepting Warranty or Additional Liability. While redistributing
      the Work or Derivative Works thereof, You may choose to offer,
      and charge a fee for, acceptance of support, warranty, indemnity,
      or other liability obligations and/or rights consistent with this
      License. However, in accepting such obligations, You may act only
      on Your own behalf and on Your sole responsibility, not on behalf
      of any other Contributor, and only if You agree to indemnify,
      defend, and hold each Contributor harmless for any liability
      incurred by, or claims asserted against, such Contributor by
      reason of your accepting any such warranty or additional
      liability.

   END OF TERMS AND CONDITIONS

   APPENDIX: How to apply the Apache License to your work.

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   Copyright [yyyy] [name of copyright owner]

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
   implied.  See the License for the specific language governing
   permissions and limitations under the License.