[Patch, libgfortran] Fix PR26554 incorrect behaviour when reading a logical variable from a string

[Jerry DeLisle]

The attached patch fixes this PR.  In order to handle the namelist reads in 
pr26136 we need to read ahead to see if there is an equal sign.  We should not 
keep looking if we are not in namelist mode.

I will commit this with a test case under simple and obvious rule tomorrow 
unless otherwise notified.

Regards,

Jerry

2006-03-04  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/26554
	* io/list_read.c (read_logical): Return the value if not in namelist
	mode.

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