Changeset 2621 for code/branches/buildsystem2/src/ois/mac

This commit gets a little ugly, couldn't separate that anymore:

• Renamed UseTolua.cmake to GenerateLuaBindings.cmake
• Applied the macros for compiler flags, linker flags, header files and source groups Updated the whole build tree for that
• Created real compiler config scripts (BuildConfigGCC.cmake and BuildConfigMSVC.cmake)
• Large scale clean up in BuildConfig.cmake
• You can now specify your own LibraryConfig and BuildConfig script via CMake Cache
• Lots of small changes and fixes