cluster/afr: Prevent spurious entry self-heal.
cluster/afr: Prevent spurious entry self-heal.

If the initial lookup shows that 'pending' is positive, then
self-heal will hold a lock and do a lookup again. This lookup
might show that 'pending' is zero everywhere. However, entry
self-heal used to consider this as a case of 'no sources' and
try to merge the directories. This patch checks for that case
and does not do the merge.

Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 326 ([2.0.8rc9] Spurious self-heal)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=326

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster