add dedicated API for letterbox
fix blank RGBA/BGRA blank frames (set alpha to 1)
handle possible[?] unset movie_aspect - part one
prototype openGL/GLX display (linux, OSX, win32)
i386, x86_64 and PPC OSX universal
default OSX app: don't connect to jack
support XDG_CONFIG_HOME and windows paths
NOOP, cleanup whitespace and remove cruft, add some statics
prefer openGL display
some windows fixes (fontfile, fullscreen restore)