Edit files for version number (and possibly other changes) :
- djgpp/config.h
- os2/config.h
- amiga/config.h
- android/jni/config.h
- macosx/config.h
- macosx/Makefile
- mingw/config.h

Edit files for possibly other changes:
- djgpp/Makefile
- os2/makefile
- amiga/Makefile*
- amiga/*.cfg
- android/*
- android/jni/*.mk
- macosx/Makefile (make sure to update dylib versions here..)
- mingw/makefile