Some of the 'testDepends' of these packages end up depending on 'text' again.
This change brings support for building and running the regressions test suites.
- file-embed: updated to version 0.0.4.2 - mtl: added version 2.1 - texmath: updated to version 0.6.0.5 - text: added version 0.11.2.0 - removed obsolete overrides svn path=/nixpkgs/trunk/; revision=33671