Code checker

Code checker

Initial implementation of code checker script. It uses pylint
with vsperf specific pylintrc file to check code syntax, design, etc.
Check can be performed for all files, specified directories or for
modified files only. It will skip files defined by EXCLUDE_MODULES
in conf/00_common.conf file. Details about script usage can be
obtained by ./check -h.

Change-Id: I7d894a2c4db92b7b9d4d4312e6f56bc48c8d5dbf
JIRA: VSPERF-114
Signed-off-by: Martin Klozik <martinx.klozik@intel.com>
Reviewed-by: Billy O Mahony <billy.o.mahony@intel.com>
Reviewed-by: Maryam Tahhan <maryam.tahhan@intel.com>