[patch, fortran] PR25061 procedure name conflict

[Jerry DeLisle]

This bug is an accepts-invalid bug. This simple patch traps this condition and 
issues an error.

Regression tested on x86-64-gnu-linux with no failures.

Test case attached. I will dejagnu it before I commit.

OK to commit to trunk?

Jerry

2007-06-18  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/25061
	* decl.c (get_proc_name) Check symbol for interface and issue an error.
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