The rear script and CHANGES file did not reflect the correct 1.9.0 version
Bugzilla 657174: Rescue image freezes during the boot while executing init
* update Fedora's rear.spec across trunk/releases 1.7.21/23
* update Fedora's rear.spec across trunk/releases 1.7.21/23
redirect errors of cmp command to /dev/null (is normal)