Quite a few fixes to make the library and test suite more robust when

cPickle cannot be imported.  This was necessary because my last mass
checkin broke cPickle and I don't feel like debugging it right now;
but it seems a good idea in general not to require cPickle when
pickle.py is also there.  A few unrelated fixes for issues while
debigging various test failures.

setup.py: disable building of cPickle until I've fixed it

Objects/...

  genobject.c: disallow raising string exceptions

Lib/...

  Cookie.py: fix doctest not to fail if cPickle is missing
  ctypes/macholib/dyld.py: fix relative imports
  sqlite3/__init__.py: fix relative import
  xml/dom/__init__.py: fix relative import

Lib/test/...

  regrtest.py: reduce list of skipped items on darwin

  test_generators.py: don't test string exceptions; test throw() errors
  test_traceback.py: don't test string exceptions

  pickletester.py: don't fail if cPickle is missing
  test_datetime.py: don't fail if cPickle is missing
  test_descr.py: don't fail if cPickle is missing (still some other failures)
  test_exceptions.py: don't fail if cPickle is missing
  test_re.py: don't fail if cPickle is missing

  test_array.py: use pickle, not cPickle
  test_bool.py: don't fail if cPickle is missing
  test_deque.py: use pickle, not cPickle
  test_logging.py: use pickle, not cPickle

1 files changed, 15 insertions, 5 deletions

diff --git a/Lib/test/test_generators.py b/Lib/test/test_generators.py
index ee36413..2ffd2f8 100644
--- a/Lib/test/test_generators.py
+++ b/Lib/test/test_generators.py
@@ -1585,6 +1585,21 @@ Traceback (most recent call last):
   ...
 TypeError: throw() third argument must be a traceback object
 
+>>> g.throw("abc")
+Traceback (most recent call last):
+  ...
+TypeError: exceptions must be classes or instances deriving from BaseException, not str
+
+>>> g.throw(0)
+Traceback (most recent call last):
+  ...
+TypeError: exceptions must be classes or instances deriving from BaseException, not int
+
+>>> g.throw(list)
+Traceback (most recent call last):
+  ...
+TypeError: exceptions must be classes or instances deriving from BaseException, not type
+
 >>> def throw(g,exc):
 ...     try:
 ...         raise exc
@@ -1619,11 +1634,6 @@ Traceback (most recent call last):
   ...
 ValueError: 7
 
->>> f().throw("abc")     # throw on just-opened generator
-Traceback (most recent call last):
-  ...
-abc
-
 Now let's try closing a generator:
 
 >>> def f():