Commit a6837b5fc9465e0f271ccd2c0bb71aae78a10a64

Arthur Schreiber 2013-07-31T19:13:35

When building with MINGW, specify `__USE_MINGW_ANSI_STDIO`. This option is already present in the CMake config, but was missing from `Makefile.embed` and would cause all kinds of weird failures when compiling rugged on windows with the ruby devkit.