strstr, strcasestr speedup; add memmem

[Eric Blake]

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According to Corinna Vinschen on 1/15/2008 2:48 AM:
|
| The committed patch is missing a regenerated Makefile.in.  Can you add it,
| please?

You're right.  Committed.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9@byu.net
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