Bug#641277: do not build-depend on just a virtual package (xlibmesa-gl-dev)

[Matthias Klose]

Package: zsnes
Version: 1.510-2.2
Severity: important
Tags: patch
User: ubuntu-devel at lists.ubuntu.com
Usertags: origin-ubuntu oneiric ubuntu-patch

do not build-depend on just a virtual package (xlibmesa-gl-dev), please give a
real alternative as well.

patch at
http://launchpadlibrarian.net/79674208/zsnes_1.510-2.2ubuntu4_1.510-2.2ubuntu5.diff.gz