Port r7241: A script to insert/update license headers. #3068.
Port r7241: A script to insert/update license headers. #3068.

Applies to Ruby, Java, and XML files in PSC's source.

The 'L' flags make it possible to distinguish the license comments
from other header comments and so to have the script run idempotently.

git-svn-id: 4b387fe5ada7764508e2ca96c335714e4c1692c6@7243 0d517254-b314-0410-acde-c619094fa49f

NUBIC/psc-mirror,NUBIC/psc-mirror,NUBIC/psc-mirror,NUBIC/psc-mirror