LU-6204 build: clean up kernel module metadata

LU-6204 build: clean up kernel module metadata

Update static MODULE_VERSION() lines - this should be automated.

Improve MODULE_DESCRIPTION() descriptions.

Make the name of the module_init()/_exit() functions consistently
{module_name}_init and {module_name}_exit.

Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Change-Id: I1c3fe5698c7f41d971a38225650597c913500c1e
Reviewed-on: http://review.whamcloud.com/16787
Tested-by: Jenkins
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Frank Zago <fzago@cray.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>