Add BSNES profiles and remaining recipes, should build everything that libretro-build.sh builds now
TODO:

Add a configuration file per-recipe to allow chaning between toolchains for different recipes
Now you can specify environment variables from a config file per recipe to allow building with different toolchains or crosscompiling, etc
Added recipe for an SJLJ mingw64-w64 toolchain, this assumes it's installed in C:\Tools\mingw64 and that python is in C:\Tools\python64.
For MAME you might have to rename python.exe to python2.exe
fix small issue with generic makefiles and additional arguments
enable all recipes by default
fix some stuff with the mame recipes
aaaaand I'm done, assuming you have both toolchains setup these scripts and recipes should allow anyone to build winx64 cores with a single command (well one command per recipe)

D
all that's left to do is to build cores for win32 with different toolchains and check which toolchains work better for each core and create recipe files. Most stuff from the win64 seh recipe should work (notable exception is mednafen
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Aa
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Merge pull request #137 from fr500/master

Add BSNES profiles and remaining recipes, should build everything that l...