Issue #22118: Switch urllib.parse to use RFC 3986 semantics for the resolution of relative URLs, rather than RFCs 1808 and 2396.

Patch by Demian Brecht.

Patch from Steven Barker.

Fix Issue #8797: Raise HTTPError on failed Basic Authentication immediately. Initial patch by Sam Bull.

Fix Issue #8797: Raise HTTPError on failed Basic Authentication immediately. Initial patch by Sam Bull.

'As' became a full keyword when with statements were added in 2.5/2.6.

Patch from Claudiu Popa.

Patch from Thomas Kluyver.

test checking for integer overflow on Py_ssize_t type: cast explicitly to
size_t.

returns -1 (error) on integer overflow.

a temporary bytearray object.

empty string singleton

Modules/_sqlite/cursor.c.

Modules/_pickle.c.

socketmodule.c.

extracts ZIP files with directory entries.  Patch by Ryan Wilson.

extracts ZIP files with directory entries.  Patch by Ryan Wilson.

Also adds a test to test_inspect to track progress on builtin
introspection support, to ensure it doesn't regress in the future.

commands from any .gdbinit initialization files".

any .gdbinit initialization files".