Old means that we have a newer version in Nixpkgs already. If there is a reason
for the old package to still exist, i.e. because some other package is still
referring to it, then Hydra will still build the package as a dependency, but
we won't want to build old packages on their own right.
- 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
