LU-444 lnet: Add LNetError for S_LND and S_LNET

LU-444 lnet: Add LNetError for S_LND and S_LNET

This changes the console error string for LND and LNET subsystem
messages to LNet or LNetError depending on the severity. This
should make it much easier to figure out where the issues are.

Signed-off-by: James Simmons <uja.ornl@gmail.com>
Change-Id: Ibd5f5c4cd717d2c9b6bd865e7e13258e84cda821
Reviewed-on: http://review.whamcloud.com/990
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Bobi Jam <bobijam@whamcloud.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>