Changed print statement to deprecation warning, as suggested by Joe Hunkeler.
Changed print statement to deprecation warning, as suggested by Joe Hunkeler.

git-svn-id: ae5d535d8549566df64d2c38e8f7097ffa427e83@42415 fe389314-cf27-0410-b35b-8c050e845b92

jhunkeler/acstools