update to 2.5
remove not required code. once.cc is now used in linux as well as windows
Updated Protocol Buffers to current tip-of-tree (SVN r529).
Protobuf tests now running on MSVC Debug and Release.
Compiler fixes for Clang.
Fix for last of failing protobuf tests on MSVC.
Merge remote-tracking branch 'origin/next' into protobuf_tot
Minor CMake cleanup.
Avoid segfault in Protobuf test destruction.
Workaround for git's line-ending chaos breaking protobuf test.
Linker fix in protobuf when using Clang on Linux.
Force GMock and GTest tests to be enabled.
Actually force GTest tests to be enabled rather than just talking about it.