LU-8998 misc: minor clean ups

LU-8998 misc: minor clean ups

Use LCME_ID_INVAL instead of comparing component IDs to 0.

Swab layout fields in lfsck_lmm2layout() to match existing usage.

Handle the (potential) case where LCME_ID_MAX isn't ~LCME_ID_MASK.

Fix man page dates.

Test-Parameters: trivial testlist=sanity-pfl
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Change-Id: I45b10156ac0081b2246b15c6790e42764b5cab07
Reviewed-on: https://review.whamcloud.com/26486
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>