[patch, libfortran] PR35132 Formatted stream I/O write should truncate

[Jerry DeLisle]

This patch is obvious and simple.  I will commit as soon as 4.4 opens.  Sooner 
if others are insisting.

Regression tested on x86-64-Linux.  New test case from the PR.

Jerry

2008-02-09  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libfortran/35132
	* io/transfer.c (next_record_w): When WRITE, truncate after
	the last record for STREAM I/O.
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