Applying patch #100994 to allow JPython to use more of the standard

Python test suite.  Specifically,

- import time instead of strop in test_b1

- test for ClassType of exceptions using isinstance instead of
  equality in test_exceptions

- remove __builtins__ from dir() output in test_pkg

test_pkg output needs to be regenerated.

Lib/test/test_exceptions.py

@@ -19,7 +19,7 @@ def test_raise_catch(exc):
 
 def r(thing):
     test_raise_catch(thing)
-    if type(thing) == ClassType:
+    if isinstance(thing, ClassType):
         print thing.__name__
     else:
         print thing