Original version of this document can be found here.
Thank you for your interest in The Apache Software Foundation (the "Foundation"). To clarify the intellectual property license granted with Contributions from any person or entity, the Foundation must have on file a signed Contributor License Agreement ("CLA") from each Contributor, indicating agreement with the license terms below. This agreement is for your protection as a Contributor as well as the protection of the Foundation and its users. It does not change your rights to use your own Contributions for any other purpose.
Please complete and sign this Agreement, and then email a pdf copy to secretary@apache.org only (do not copy any other persons or lists). Read this document carefully before signing and keep a copy for your records.