Added CMake toolchain file for MinGW cross-compile

* Minor necessary repo change
Merge branch 'master' into spinda
Misc cleanup
Gen 3-4 images w/personality 0x88888888 put spots in correct place, realized Gen 5 needs one
Gen 5 normal spot position works
Gen 3 successfully skips transparent pixels
Working on isRgbTransparent for Gen 4-5