Please don't include any modules from CPAN in the core perl package. When you do, it is impossible to upgrade to a newer version of that module without rebuilding the entire perl distribution. This is a problem especially because the MD5 module is included with perl, but that module is obsolete (Digest-MD5 should be used now instead).
The MD5 module is required by the cleanfeed package, so the module has to be in the distribution somewhere. MD5 is replace by Digest::MD5 in the latest build because it provides a backwards-compatible interface.
I still say that no perl modules should be included in the core perl package just because one program requires a module. That goes against the whole package scheme: you don't include gtk+ in glib just because something that requires glib requires gtk+. If a bug is found in Digest::MD5, or a new version with more features is released, it is impossible to install it without replacing the whole perl install (or by using --force to override conflicts, which is ugly). Perl modules should be made as separate packages. If the Digest::MD5 module is needed, then make a Digest-MD5 (or better, perl-Digest-MD5) RPM for that module.
I agree, but at this point it's far too late to get the description and summary for a new package translated in time for the upcoming release.