- fixed C89 compliance issues with the last commit (rlebitmap/minifx)

- moved minifx.c under scr, since it's a part
- moved src/utils/RleBitmap.* under src/ since src is all about utility
  stuff anyway.
- made filenames DOS 8.3 compatible and lowercase
- fixed include malloc.h -> stdlib.h
- removed casts from malloc
- fixed indentation consistency issues in one file
- added new files to the watcom makefile