Log Message:
Updating devel/p5-Devel-CheckOS from 1.61nb1 to 1.63

pkgsrc changes:
- add license definition

Upstream changes:
1.63    2010-05-29      $^O for VOS is sometimes VOS, sometimes vos;
                        VOS supports POSIX shell redirections

1.62    2010-05-21      Add OS X 10.5 platform and EBCDIC family