enable CPython's _ast module

function compile

Allow subclassing classmethod and staticmethod

Don't abort when generating a call of a known type which is not callable.

fixes #1046

enable dictview tests

support type(name, bases, dict) where dict has non str keys

Add some missing attributes to Int object

Pyston current frame introspection mechanism does not support OSR frames, get the line number when the frame still available

fix minor compatibility issues

The capi uses this to deny instancing a type directly.

Add missing complex attributes

Implement PyErr_WarnEx

add PyGC_AddPotentialRoot

This function let's one register a potential root range from the CAPI
Was part of the unmerged #1026 but split out because #1029 requires it too.

Fix crash inside BoxedGenerator::gcHandler

This could happend when we trigger a collection inside the BoxedGenerator constructor when allocating space for the args array.
In this case it would not be set but we would dereference the memory.

Micro optimization on 'gc_invalidateOrderedFinalizerList'

Fix #599 by allowing subclasses of string and unicode in sys.path

Fix issue #596 'slice is not subclassable'

fix issue #596 'slice is not subclassable'

Micro optimization on 'gc_invalidateOrderedFinalizerList'

Add four separate tests with prefix of sys_path for four types of
sys.path entries: str, unicode, subclass of str, and subclass of
unicode.