ocfs2/dlm: Print more messages during lock migration

When a lock resource is migrated, the dlm compares the migrated
locks with that that was already existing on the new node. If the
comparison fails, it BUGs. This patch prints more messages when the
comparison fails inorder to help with the root cause analyis.

http://oss.oracle.com/bugzilla/show_bug.cgi?id=1206


This does not fix bz1206. However, if we run into it again, we will
have more information to chew on.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>