'stone-soup' updated to 0.11

The previous version of this formula was pretty ancient.

IMO this formula should be renamed to 'crawl' (it's what the game is commonly known as, and the name of the executable) but couldn't figure out how to get the rename to stick.  I think it's some weirdness with the brew-tap system.

I'm not yet sure which dependencies are required for the console version -- probably one could minimize download bandwidth by using tarball source and patching out the unneeded libraries.  Right now it just grabs all the library submodules and links them statically, but it builds on OSX 10.8.