See COPYRIGHTS file for original IRAF.

Do not remove CREDITS_IRAF64 and LICENCE_IRAF64 from IRAF package.

Please display following message when starting IRAF shells;

  This product includes results achieved by the IRAF64 project in 2006-
  2009 directed by Chisato Yamauchi (C-SODA/ISAS/JAXA).

