Changes for version 2.1:
factor files - These are derived from a list from here, and reformatted with a utility.
sample build command for Microsoft 64-bit compiler.
sample build command for mingw 32-bit compiler. Tested with gcc 3.45 and gcc 4.21.
sample build command for mingw 64-bit compiler. Tested with gcc 4.3.0.
sample win64 executable built with Microsoft compiler.
sample win64 executable built with mingw gcc compiler.
sample win32 executable built with mingw gcc compiler.