Some clean up and slight performance improvement.
Switch to owned vectors to reduce some constant factors.
no more exp macro in master
Do a swap correctly.
num_caps -> ncaps
Stop allocating hashmaps for each capture group when there aren't any named groups.
Proper deps for python benchmark.
Add fastest regex-dna.
Make Perl character classes and word boundaries Unicode friendly.
Use improved Makefile from native branch.
Update benchmarks.
Update to work with tweaks in building syntax extensions.
Replace master branch with native.