bad link in XML-RPC documentation

bug #1365984: urllib and data: URLs. Problem was that cStringIO objects cannot be assigned attributes on the fly.

Also set _XOPEN_SOURCE to 500.
Will backport to 2.4.

and decode methods to the documentation of the default error handlers.

invoking the Python interpreter (which didn't work on non-english Windows
versions). Check return codes instead.

Cleanup a bit more references so test_urllibnet is stable (test_urllib2 is sometimes stable, at least in isolation)

Delete globals which contain variable information at the end of the test.
This makes the test stable (no reported leaks) when running regrtest -R
to find reference leaks.

so it is only executed once.  Otherwise the same search function is
repeated added to the codec search path when regrtest is run with -R
and leaks are reported.

Patch 1315161 sebastien blanchet

exception (e.g., passing in an illegal argument).

Applies patch #1314396.  Thanks Eric Blossom.

2. Allow binding of movement keys

[Patch #1094164] replaceChild(x,x) ends up removing x of the tree.  Add fix from Felix Rabe and a test case

[Patch #1350573] zlib.crc32 doesn't handle 0xffffffff seed.  Add tests and bugfix.  Bug reported by John Schmidt; bugfix by Danny Yoo.

Use "raise instance" instead of "raise class, args".

Modernize the code in other spots (bools, startswith()).