Patch for fortran/30278

[Jerry DeLisle]

Steve Kargl wrote:
> I've updated Steven's patch with a testcase and also the
> issuing of warnings in the non -std=gnu cases.  I'll 
> commit this on 1 Jan 07 if no one objects.
> 
> 
> 2006-12-30  Steven Bosscher  <stevenb.gcc@gmail.com>
> 	    Steven G. Kargl  <kargl@gcc.gnu,org>
> 
> 	* testsuite/gfortran.dg/backslash_3.f: New test.
> 
> 	* fortran/io.c (next_char): Deal with backslash escaped characters.
> 	Issue warnings in non -std=gnu cases.
> 	* fortran/primary.c (next_string_char): Issue warnings in non
> 
This is OK!

Jerry