disable autotestdict when testing under Py3.4 and adapt autotestdict tests to make up for its smarter docstring lookup

--HG--
extra : amend_source : a382ac055ce79771e0457bed2e3b8d253581a54f

let += and -= inplace operators use pointer arithmetic when used on C strings (instead of currently failing attempt at string concatenation)

--HG--
rename : tests/broken/inplace_lhs.pyx => tests/compile/inplace_lhs.pyx
rename : tests/broken/inplace_ops.pyx => tests/compile/inplace_ops.pyx

--HG--
rename : tests/broken/voidstarcast.pyx => tests/run/voidstarcast.pyx

--HG--
rename : tests/broken/typeofexttype.pyx => tests/run/typeofexttype.pyx

--HG--
rename : tests/broken/onelinesuite.pyx => tests/run/onelinesuite.py

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

let CPython do the exception instantiation on 'raise' in Py3 to make sure we handle all special cases correctly

use more CPython-like (and potentially faster) _PyType_Lookup() for internal special method lookups instead of generic attribute lookup