Formula for ScummVM.

This formula needs a lot of work, on optimising and getting (optional)
dependencies figured out.

Formula/scummvm.rb

@@ -0,0 +1,31 @@
+require 'brewkit'
+
+class Scummvm <Formula
+  @url='http://downloads.sourceforge.net/project/scummvm/scummvm/0.13.1/scummvm-0.13.1.tar.bz2'
+  @homepage='http://www.scummvm.org/'
+  @md5='843d9cd4470022bd3b269eb84298dc16'
+
+  def caveats
+    <<-EOS
+ScummVM provide their own Mac build and as such that is the one they
+officially support on this platform. Ours is more optimised, but you may
+prefer to use theirs. If so type `brew home scummvm' to visit their site.
+    EOS
+  end
+
+  def deps
+    LibraryDep.new 'sdl'
+    # Optional, but you want them anyway.
+    OptionalLibraryDep.new 'flac'
+    OptionalLibraryDep.new 'libogg'
+    OptionalLibraryDep.new 'libvorbis'
+  end
+
+  def install
+    system "./configure --prefix='#{prefix}' --disable-debug"
+    system "make install"
+    share=prefix+'share'
+    (share+'scummvm'+'scummmodern.zip').unlink
+    (share+'pixmaps').rmtree
+  end
+end