[PATCH, libgfortran] Fix for PR25039

[Jerry DeLisle]

:addpatch fortran:

The included patch and test case fixes the handling of commas encountered during 
numeric inputs.  I created a new flag to check to minimize having to change code 
all over the place.

2005-11-27  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/25039
	* io/io.h: Create a new flag sf_read_comma to control comma
	separators in numeric reads.
	* io/transfer.c (formatted_transfer_scalar): Initialize the flag.
	  (read_sf): Check for commas coming in and if the flag is set,
	  shortcut the read.
	* io/read.c (read_a) (read_x): Clear the flag for character reads and
	  reset it after the reads.

Attached patch regression tested.  OK for trunk? and 4.1?

I am think about adding some checks for std= and pedantic after I review the F95 
standard and see where this falls out.  Ifort and g77 do it this way.

Regards,

Jerry
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