This reverts commit 571ddb022369b5fe8fb2db4e61e432b56dde4e9c.
Moving this to /usr/sbin causes dependency problems for the
resource-agents package, which is hardcoded to look for
/sbin/mount.cifs. I'll just plan to make this change in
f19 and leave the earlier releases alone.
While we at it, add a patch to fix some comments in cifsidmap.h.
