[PATCH] Optimize strstr, strcasestr and memmem

[Joseph S. Myers]

There is an open bug (bug 11607) specifically about strstr slowing down 
(in particular cases) when the worst-case-linear implementation was 
introduced.  So the test in that bug may be useful for benchmarking the 
patch (and if it appears to fix the regression then it will be appropriate 
to list [BZ #11607] in the ChangeLog entry, etc.).

-- 
Joseph S. Myers
joseph@codesourcery.com