nmbd_elections.c: Removed force elections code to bring into line with 1.9.18.

nmbd_elections.c: Removed force elections code to bring into line with 1.9.18.
nmbd_namelistdb.c: Added comment for Chris.
nmbd_subnetdb.c: Went back to Chris's comparison code as with the make_nmb_name
                 change it all works now.
lib/rpc/server/srv_netlog.c: Ensure we return 'account disabled' for disabled
                             accounts, rather than crashing.
Jeremy.
(This used to be commit 4ab3d1682789319965a55edb37212b7671a743bb)