LU-871 build: change %L printk format to %ll

LU-871 build: change %L printk format to %ll

The clang-analyzer static code analysis flagged %L format specifiers
for printf/printk as deprecated, so change all of their uses to %ll.

In a couple of files (checkstat.c and truncate.c) there are existing
code style issues that need to be fixed before landing, in order to
get a clean bill of health from checkpatch.pl.

Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: I1bc75a0f43b25de112f5ae8f2273b3dc46081d09
Reviewed-on: http://review.whamcloud.com/1734
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Niu Yawei <niu@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>