Regex performance improvements

[Ulrich Drepper]

Paolo Bonzini <bonzini@pc-amo3.elet.polimi.it> writes:

> - allowing one to conditionally remove gapped buffer support.  To limit
>   the changes, re_match_2 and re_search_2 are still available, but raise
>   an error if size1 != 0 && size2 != 0.

So I understand it correctly that this changes the behavior of
exported functions?  This is not possible.

> - using GNU CC first-class labels if available.

This sounds reasonable.  If you can separate these changes from those
described above I'll probably apply them.

Thanks,

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