Probably wouldn't cause a problem but manually editing these types through python could easily crash blender.
also changed cmake, stub-makefile default build dir to be lower case and leave out architecture string, easier for documentation.
Use ../build/linux/ rather then ../build/Linux_i686/
Running 'make' starts an out of source build with CMake in ../build/OS_CPU, creating the dir and configuring CMake if necessary.
So casual users can just run this without changing dirs:
'svn up ; make'