Add FindSDL2 package module cmake scripts
Update dependencies & fix spacing issue with code formatted blocks
Add cmake configuration for SDL2 packages
Remove old versions of libraries packaged in extlibs
Reflect nomlib's massive renames in method calls since the dev branch

	* I think I almost have TTcards compiling with a mostly-functional
SDL2 nomlib -- w00t!
Merge branch 'dev' into feature/SDL2/jeff
Merge branch 'feature/SDL2/jeff' into dev