Rewrite pkg-cacher-cleanup.pl
Add sample client files, lzma and xz compression, and repoforge and epel

Add sample client files for centos/fedora and debian/ubuntu.

Add support for .lzma and .xz compression for Debian/Ubuntu.

Add repoforge and epel to config files.
Fix sample names in Makefile
Fix rpm generation
Merge pull request #20 from Robert-Nelson/cleanup

Implement repository cache