LU-2446 build: Update Whamcloud copyright messages to Intel

Update script to assign all Whamcloud copyrights to Intel and add
copyrights to files that have been edited by Whamcloud since
2010-06-01.

Changes to the script include:
  Ability to exclude some previous commits.
  Intel Authors now reconized
  Ability to deal with a few common forms in the Intel Copyright
  Xyratex Copyright aware
  Updated user messages
  Detects Git non-linear year issues.

Signed-off-by: Keith Mannthey <keith@whamcloud.com>
Change-Id: I8c817e6564ea51b88223f954af8b838d713c9a44
Reviewed-on: http://review.whamcloud.com/4811


Tested-by: Hudson
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>