LU-462 Don't alloc/free client data for self export

LU-462 Don't alloc/free client data for self export

Self export doesn't need client data and ldlm initialization.
Patch uses uuid comparision to determine self_export.

Change-Id: Id26ef90e9857e4c1d3a0e7a3756eaf67607890d6
Signed-off-by: Mikhail Pershin <tappro@whamcloud.com>
Reviewed-on: http://review.whamcloud.com/1574
Tested-by: Hudson
Reviewed-by: Jinshan Xiong <jay@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>