should implement less than or equal to (as the code does).

It caused: "Fatal Python error: UNREF invalid object" in the DoubleTest.

Some functions in the msvcrt module are skipped,
and socket.ioctl is enabled only when using a more recent Platform SDK.

(and yes, there are still companies that use a 10-years old compiler)

This should prevent some test_multiprocessing failures

Also remove references to odbc libraries, which are not shipped with vs2003 express.
(and certainly not useful)

if its UUID has lowercase letters.

keys in type dictionaries without using this locals() hack.

Document ctypes.util.find_library() and ctypes.util.find_msvcrt().

(see Doug Evans' comment on python-dev 2008-06-10)

 Added checks for integer overflows, contributed by Google. Some are
 only available if asserts are left in the code, in cases where they
 can't be triggered from Python code.

Document the new 'offset' parameter for the 'ctypes.byref' function.

stringobject and PyBytes defines in bytesobject.