mount.ceph: option parsing fix
mount.ceph: option parsing fix

Passing -o secretfile would cause a segfault since searching for = would
result in a null pointer.  New version checks for that case.  Also, *end
cannot be a ,.

Signed-off-by: Samuel Just <4c46b94684b338bae1ed5e7e1321718dd75401cc@dreamhost.com>

ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph,ajnelson/ceph