Changes to build on Mac OS 10.9 (Mavericks).

The new version of Clang is pickier about certain things. And we
discovered that on all versions of Mac OS we currently use, some extra
compiler flags for C++11 are no longer necessary.
Fix some Clang warnings in makeman used for docs.
Fix a minor memory leak on rare error conditions in the cream_gahp.
Merge branch 'V8_0-branch'