strstr, strcasestr speedup; add memmem

Duane Ellis
Fri Jan 11 01:33:00 GMT 2008

Eric Blake wrote:
> OK to commit?
to be clear, i did not try these, just a quick 2 minute glance.

Optimizations like this, for some are helpful, for others - painful.
Newlib is still found on _tiny_ systems with very limited code space.

Thank you for including _OPTIMIZE_SPEED_ in this.


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