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/gameengine/Expressions/IntValue.cpp

@@ -323,9 +323,6 @@ void CIntValue::SetValue(CValue* newval)
 #ifdef WITH_PYTHON
 PyObject *CIntValue::ConvertValueToPython()
 {
-	if ((m_int > INT_MIN) && (m_int < INT_MAX))
-		return PyLong_FromSsize_t(m_int);
-	else
-		return PyLong_FromLongLong(m_int);
+	return PyLong_FromLongLong(m_int);
 }
 #endif // WITH_PYTHON