Merge pull request google#1433 from dsacre/fix-clang-warnings

Fix Clang warnings

Provides a release that reflects a current version of the project.

Cuts release 1.7.0

Cuts release 1.6.0

Creates release tag 1.5.0 off the head of branch 1.5.

Creates release tag 1.4.0 off the head of branch 1.4.

Merges changes in r214 from branches/release-1.3 to tags/release-1.3.0:

svn merge -r 214:215 branches/release-1.3 tags/release-1.3.0

Updated CHANGES for release 1.2.1

Fixed a bug in the build script causing crash in XCode

Creates tags/release-1.1.0 from the head of branches/release-1.1.