Fix first example in memoryview docs

prevent special __weakref__ attribute from triggering generation of garbage collection code for the type

--HG--
rename : tests/run/function_as_method_T494.pyx => tests/run/function_as_method_py_T494.py

drop 'vile hack' by restricting state changes of AttributeNode during infer_type() to what analyse_types() does

fix warning about unused temp variable when both FlattenInListTransform and SwitchTransform are applied

Update documentation of extension type __dealloc__ method.

Added note that the __dealloc__ method of a superclass is always called, even if it is overridden in a subclass.

enable 'inline_defnode_calls' optimisation for benchmarks (even though they don't benefit currently)

Fix memoryview crashes when using msvc9 64 bit compiler 

ENH: test for af9cfeb5 fix of weakref objects 

Fix warning: unused function '__pyx_pw_5numpy_7ndarray_1__getbuffer__'