Use the standard pr_<level> functions eases grep a bit.

Added a few missing terminating newlines to messages.
Coalesced long formats.
Signed-off-by: NJoe Perches <joe@perches.com>
Acked-by: NDan Williams <dcbw@redhat.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>