This commit seems to break the py3k build.

This reverts commit b50c6792.

Support fused memoryviews & fused base types, disable fused generators, disable memoryview pointer dtypes

Fix cython scope caching (it breaks about half of the test suite, but it probably slow down cython.compile)

optimise dict.setdefault() - would be better in Builtin.py, but class scopes don't seem to support signature overloading yet

--HG--
extra : rebase_source : d0f2bd97e0cec8919ac00e9a0ec8b714e338a9cb

Support for typed memoryviews, memoryview objects & cython.array