re PR fortran/28039 (Warn when ignoring extra characters in the format specification)

re PR fortran/28039 (Warn when ignoring extra characters in the format specification)

2010-04-08  Bud Davis  <bdavis9659@sbcglobal.net>

	PR fortran/28039
	* io.c (check_format_string):  Added check for additional non
	blank characters after the format string was successfully
	parsed.
	* io.c (check_format): Changed the error messages for positive
	int required and period required to drop through the error logic
	and report with gfc_error instead of gfc_error_now.  Corrected
	format postion for hollerith strings.

From-SVN: r158147