Optimized Unicode Representation
Created originally on Bitbucket by pjenvey (Philip Jenvey)
PyPy needs PEP 393 like optimized unicode strings. This is for Python 3.3 compat and the potential space savings/perf, but it should work on PyPy2 as well
The plan is to use utf-8 strings as the as the underlying storage
wayedt made a prototype during GSoC in the utf8-unicode2 branch:
https://bitbucket.org/pypy/pypy/branches/compare/utf8-unicode2%0Ddefault
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