Extended zjturner's changes to encompass all function dispatch and use PyErr_WriteUnraisable to handle exceptions during __del__.

Also added test cases for the unnamed temporary destruction that is throwing assertions in Python 3.5.

Examples/test-suite/python/python_destructor_exception_runme.py

@@ -0,0 +1,14 @@
+import python_destructor_exception
+from StringIO import StringIO
+import sys
+
+#buffer = StringIO()
+#sys.stderr = buffer
+
+attributeErrorOccurred = False
+try:
+    python_destructor_exception.ClassWithThrowingDestructor().GetBlah()
+except AttributeError, e:
+    attributeErrorOccurred = True
+
+assert attributeErrorOccurred