cmake: fix warning about ASM_YASM compiler being unknown
cmake: remove assembly library to fix MSVC static lib

This fixes the static library built by VisualStudio to include the assembly
objects.  It has the side effect of causing the assembly objects to be built
once for the static lib and once for the shared lib, which can be avoided by
unloading the shared lib project while you are working on assembly within
VisualStudio
cmake: remove obsolete build flags
cmake: add Visual Studio 2013 build folder
cmake: drop STLport support, it is no longer necessary
rc: replace tabs with spaces