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extra : rebase_source : d0d280010b14401c44e70a279dc9066031ba7de7

implemented 'ignore compile failures' mode in cythonize() to do trial+error compilation of .py files

--HG--
extra : rebase_source : d415ce5d3dc3a3504b2bf4e8fc1ffd0cd16de64e

fix for refnanny C code in dict iteration: generate all GOTREFs before all coercions before all assignments to properly handle error cases

Fix "PyErr_Format + PY_FORMAT_SSIZE_T likely broken in Win64"

Add '/openmp' flag when compiling Cpp code with msvc compilers

refactoring and rewrite of optional kw arguments parsing helper function to support Unicode keyword arguments in Py2 (CPython supports them in Py2.6+)

Fix parallel/prange test failures on Windows

move utility code inclusion from Name/AttributeNodes to the latest possible step in the pipeline (after removing it from declaration analysis)

always instantiate exceptions directly when raising them, fix Py3 crash when an exception type does not create an exception instance (works in Py2, although not in PyPy)

prevent utility code of overloaded function entries from accidentally being written to the output file