prune.exp: Remove "In (program|subroutine"block-data)" message from g77

2002-02-07  David Billinghurst <David.Billinghurst@riotinto.com>

	* lib/prune.exp: Remove "In (program|subroutine"block-data)"
	message from g77
	* lib/g77-dg.exp: Trim g77 error messages so that they are
	recognised by dg.exp.

From-SVN: r49599