[patch, fortran] PR32545 Give compile error not warning for wrong edit format statements

[Jerry DeLisle]

The attached patch generates an error on bad formats and propagates that 
information up the call chain to check_io_constraints to give a MATCH_ERROR. 
Otherwise the error was getting buffered out and would not be seen.

Regression tested on latest trunk with x86-64-Gnu/Linux.

OK for trunk?

Regards,

Jerry

2007-07-03  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/32545
	* io.c (check_format): Always call gfc_error for errors.
	(check_format_string): Change type of this function to try and
	return the result of check_format.
	(check_io_constraints): Return MATCH_ERROR if check_format_string
	returns FAILURE.
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