Removed unused hasLastMoveToPoint variable from path::path(const path_factory&, const surface&). Fixed declarations and made other changes for RefImplAppVersion, RefImplAppName, and RefImplAppFullVersion. Added AX_CFLAGS_WARN_ALL to configure.ac. Added a shell script to run configure with GCC 4.9. Adjusted clang configure shell script to add suitable CFLAGS.