Add 1.7.1 section to CHANGES and update with already merged items.
Add 1.7.1 section to CHANGES and update with already merged items.

* CHANGES
  (1.7.1): New.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion