cluster/dht: Do readdir in dht_readdir instead of readdirp
cluster/dht: Do readdir in dht_readdir instead of readdirp

The readdir call will not be used by applications (fuse will
only ever send readdirp), but it will be used by
afr to do directory self-heal at the time of opendir.

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

BUG: 249 (Self heal of a file that does not exist on the first subvolume)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=249

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster