gobject_gdb.py: support gsignal fastpath and detect more marshallers

- Commit f02ec2f2de added a gsignal fastpath where g_closure_invoke_va()
is directly called from g_signal_emit_valist() skipping signal_emit_unlocked_R()
altogether which it's the function used by gobject_gdb.py to detect
signal emission.

So we update gobject_gdb.py to also detect signals which use this
g_closure_invoke_va() fastpath.

- We also update the existent code to detect marshallers to also
include these:

surface_event_marshaller()
gdk_surface_event_marshallerv()
g_type_class_meta_marshal()
g_type_class_meta_marshalv()

This allow us that for signal emissions which use those marshallers
to keep showing the signal handler frame just after the
<emit signal blabla> line.

gobject/gobject_gdb.py

@@ -287,7 +287,8 @@ class GFrameDecorator:
 
     def find_signal_emission(self):
         for i in range(min(len(self.queue), 3)):
-            if frame_name(self.queue[i]) == "signal_emit_unlocked_R":
+            name = frame_name(self.queue[i])
+            if name == "signal_emit_unlocked_R" or name == "_g_closure_invoke_va":
                 return i
         return -1
 
@@ -306,7 +307,7 @@ class GFrameDecorator:
                 if start == 0:
                     break
                 prev_name = frame_name(self.queue[start - 1])
-                if prev_name.find("_marshal_") >= 0 or prev_name == "g_closure_invoke":
+                if prev_name.find("_marshal") >= 0 or prev_name == "g_closure_invoke":
                     start = start - 1
                 else:
                     break
@@ -317,7 +318,6 @@ class GFrameDecorator:
                     "g_signal_emit_valist",
                     "g_signal_emit",
                     "g_signal_emit_by_name",
-                    "_g_closure_invoke_va",
                 ]:
                     end = end + 1
                 else: