Fixes dkms.conf for Redhat Enterprise

Fixes dkms.conf for Redhat Enterprise

commit 8e0aaae076f4cccfd2d6ed81ede4e355235b578e , while fixing dkms.conf for
Fedora, broke dkms.conf for RHEL. In RHEL, you get a dkms.conf with too
many backslashes in the "mv" line. The dkms.conf should have the mv line
reading:

mv src/libafs/MODLOAD-*/\$KMODNAME \$DSTKMOD"

for Fedora.

This change checks if we are building on Fedora, and if so, maintains
the extra backslashes. Otherwise, not.

	modified:   src/packaging/RedHat/openafs.spec.in

Uses the dist tags as specified at
http://fedoraproject.org/wiki/Packaging:DistTag

Reviewed-on: http://gerrit.openafs.org/6851
Reviewed-by: Ken Dreyer <ktdreyer@ktdreyer.com>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Derrick Brashear <shadow@dementix.org>
(cherry picked from commit 81a9a33e0bc5455841ba105dab52735c64c7096b)

Change-Id: I7cdc0a93e0f4c292a07184ea1d4f15ece529276b
Reviewed-on: http://gerrit.openafs.org/6863
Reviewed-by: Derrick Brashear <shadow@dementix.org>
Tested-by: Derrick Brashear <shadow@dementix.org>