dlm: improve error and debug messages

Change some existing error/debug messages to
collect more useful information, and add
some new error/debug messages to address
recently found problems.

Signed-off-by: David Teigland <teigland@redhat.com>
diff --git a/fs/dlm/lock.h b/fs/dlm/lock.h
index 1a25530..56e2bc6 100644
--- a/fs/dlm/lock.h
+++ b/fs/dlm/lock.h
@@ -15,7 +15,8 @@
 
 void dlm_dump_rsb(struct dlm_rsb *r);
 void dlm_print_lkb(struct dlm_lkb *lkb);
-void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms);
+void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms,
+			       uint32_t saved_seq);
 void dlm_receive_buffer(union dlm_packet *p, int nodeid);
 int dlm_modes_compat(int mode1, int mode2);
 void dlm_put_rsb(struct dlm_rsb *r);