Description of problem:

I'm using anaconda-runtime-11.0.5-1 to respin fedora w/ updates.
It's much faster and disk-efficient to create the new Fedora/RPMS/
directory using symlinks to the original and update cache areas.

The existing version of splittree.py uses the link size instead of
the actual filesize.

Using "du -sL" instead of "du -s" corrects this.  I've attached a patch
that implements this.  du is from coreutils-5.96-1.2.

BTW: bugzilla doesn't have a "anaconda-runtime" category, so I'm
posting this against anaconda.