Update and fix things for current Emacs trunk (24.4)

Notes:
- The sRGB patch is now a simple text-replacement, as diff/patch files
  seem to just fail. Even Homebrew's emacs formula does it this way.
- Removed fullscreen patch, as Emacs 24.4 includes fullscreen support on
  OS X, both native and pre-Lion style fullscreen. More details here:
  http://www.emacswiki.org/emacs/FullScreen#toc23
Merge branch 'master' of github.com:jimeh/build-emacs-for-osx

Conflicts:
	README.md