py api cleanup, replace use...

- PyLong_FromSsize_t --> PyLong_FromLong
- PyLong_AsSsize_t --> PyLong_AsLong

In all places except for those where python api expects PySsize_t (index lookups mainly).

- use PyBool_FromLong in a few areas of the BGE.
- fix incorrect assumption in the BGE that PySequence_Check() means PySequence_Fast_ functions can be used.

source/blender/python/bmesh/bmesh_py_ops.c

@@ -342,7 +342,7 @@ static PyObject *pyrna_op_call(BPy_BMeshOpFunc *self, PyObject *args, PyObject *
 					item = PyBool_FromLong((BMO_SLOT_AS_BOOL(slot)));
 					break;
 				case BMO_OP_SLOT_INT:
-					item = PyLong_FromSsize_t(BMO_SLOT_AS_INT(slot));
+					item = PyLong_FromLong(BMO_SLOT_AS_INT(slot));
 					break;
 				case BMO_OP_SLOT_FLT:
 					item = PyFloat_FromDouble((double)BMO_SLOT_AS_FLOAT(slot));