Attempt to work around a GCC EH problem by sticking a virtual function

in error_already_set and defining it in the library.

Removed some flotsam


[SVN r19274]

libs/python

@@ -1 +1 @@
-Subproject commit af53ae83297deaf607505bfd5a57529a92d9ffce
+Subproject commit 77f5eb703ce76716e0882655d013ed5ca82b8fc6