PATCH: ignore .rpm* debris in directories included in config files

This patch alters hobbit-wide "directory" include reading logic to skip files that have been replaced or left over by an RPM install. Specifically, we're splitting hobbitlaunch.cfg into a directory of files, but we don't want to read in things tweaked by a package upgrade; and there's no way to exclude those in the syntax...

Regards,

Japheth Cleaver