We had disabled ocfs2_log_dlm_error() during the initial import.
Re-enable it so the kernel can log dlm errors. One problem is that our
binary lock names don't lend themselves legible prints. Add a buffer to
the lockres to hold a pretty-printed version of the lock name. We fill
it from the ->print callback.
Signed-off-by: Mark Fasheh <mfasheh@versity.com>