Issue python#109: Adapt the gdb library to the new function names.

Tools/gdb/libpython.py looks for an internal function, which got renamed. Now it looks for both names. This way it is compatible with older Stackless versions.

https://bitbucket.org/stackless-dev/stackless/issues/109
(grafted from 0d9d668131403a2ac450a87d9ea6cfd161df1cc1)

Author: Anselm Kruis

Tools/gdb/libpython.py

@@ -1435,12 +1435,12 @@ def is_evalframeex(self):
             try:
                 gdb.lookup_type("PyCFrameObject")
                 # it is Stackless Python
-                EVALFRAMEEX_FUNCTION_NAME = 'PyEval_EvalFrame_value'
+                EVALFRAMEEX_FUNCTION_NAME = ('slp_eval_frame_value', 'PyEval_EvalFrame_value')
             except gdb.error:
                 # regular CPython
-                EVALFRAMEEX_FUNCTION_NAME = 'PyEval_EvalFrameEx'
+                EVALFRAMEEX_FUNCTION_NAME = ('PyEval_EvalFrameEx',)
 
-        if self._gdbframe.name() == EVALFRAMEEX_FUNCTION_NAME:
+        if self._gdbframe.name() in EVALFRAMEEX_FUNCTION_NAME:
             '''
             I believe we also need to filter on the inline
             struct frame_id.inline_depth, only regarding frames with