Merge pull request #245 from dshrader/master

Update to plfs.spec, the release process, and letting users know about the default location of PLFS man pages
Remove creation of plfs tmp directories in plfs.spec.

Since we are no longer providing plfsrc.example and putting it in as
/etc/plfsrc, there is no default plfs configuration. Therefore, it is
not necessary for the plfs rpm to do anything with the old plfs
directories.