Restore functionality to pass a FID instead of a path to rbh-find and rbh-du.
Remove EOL spaces.
Make the specfile compatible with RHEL or Oracle's version of mysql.

rpms from RedHat/CentOS provide mysql-... while Oracle's provide
MySQL-...., and there is no short way to say either is good. So
look for one common file they provide.
We lose the requirement on the version number though.