[PATCH] string: Replace outdated comments in strlen().

[Joseph Myers]

Some incidental comments (this is not a review of the patch and should not 
delay it going in):

* Do I understand correctly that this is a *different* comment issue from 
the one described in bug 5806 with comments in various string functions?  
(Maybe the issue described in comment#10 in that bug?)

* I'd still like to see the generic string function improvements discussed 
in that bug getting into glibc at some point.

-- 
Joseph S. Myers
joseph@codesourcery.com