Certainly. As you know, you will not merge updates from xetc52.tgz.
You should, by this time, be sufficiently self-directed to determine impact yourself:
- You could easily download and inspect it's contents with tar(1).
- You can also look in the Xenocara source tree. The xetc52.tgz fileset is packaged during Xenocara release from contents of two files: /usr/xenocara/distrib/sets/lists/xetc/{mi,md.<arch>}.
- If you don't have the Xenocara source tree you can inspect these from the project's CVS Web interface.