mxcl/homebrew — pull request #9866 by fbuenemann (2012-01-30 11:19:28+00:00)
Title: Upgrade ghostscript to 9.04 and add HEAD support

This adds support for installing ghostscript from the official git repository and also updates the stable ghostscript version from 9.02 to 9.04.

In addition I've modified the formula to use ghostscripts built-in libjasper 1.701.0-gs5, because in my experience it causes less errors with problematic PDFs (it has lots of patches not contained in upstream libjasper according to ghostscript devs).