[gfortran] PATCH formatted write of 0.0 (PR libfortran/20101)

[FX Coudert]

Here is the requested testcase. I have changed the patch and Changelog 
entry since you already committed the fix for the typo. Here are the two 
Changelog entries for the fix to libgfortran (pr20101.diff) and testcase 
(write_0_pe_format.f90).

2005-02-27  François-Xavier Coudert  <coudert@clipper.ens.fr>

	PR libfortran/20101
	* write.c (output_float): Adding special check for value 0.0 in
	  PE format.


2005-02-27  François-Xavier Coudert  <coudert@clipper.ens.fr>

	PR libfortran/20101
	* gfortran.dg/write_0_pe_format.f90: New test.
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