remove redundant importing overhead for newly built test module in test runner and make sure we always import exactly the one we just built

Naive approach to fix memview incref/decref asymmetry in transpose

--HG--
extra : rebase_source : 9a5bbb4f08a0eb5be71afd48d9ad5566d8a39efc

--HG--
extra : rebase_source : fb47cc7e0154abb172016f1945dad2968b3f2a3e

Non-Wrapped Inline Declaration Breaking Compatibility with C89 Compilers

Explain difference between cdef and cpdef

Add casting to const

--HG--
rename : tests/compile/ext_attribute_cache.pyx => tests/run/ext_attribute_cache.pyx

enable Py_TPFLAGS_HAVE_VERSION_TAG on extension types by default (also in Py2) and provide 'type_version_tag' option to disable it

Correctly handle function pointer typedefs with calling convention specified.

Fix extern variable cimport code in cimport_from_pyx mode

Consistently declare local error reporting variables (lineno, clineno, filename)

In cimport_from_pyx mode don't treat "cdef extern from" variables as being defined, preventing erroneous cross-module cimport.

Consistently declare local error reporting variables (lineno, clineno, filename) for all types of functions.