Patch by Suman Saha.

Without this fix, both 2.7 and 3.x would always point to the "current"
docs...which means that before this fix python 3.2 'help' pointed to the 2.7
tutorial, and without this fix when we switch over to the 3.x docs being
current, 2.7 would have pointed to the python3 tutorial.

Patch by Sandro Tosi.

Added a new crasher that targets mutating the underlying storage of a buffer.  All work done by Armin Rigo.

IDLE doesn't not execute commands from shell with default keybinding
for <Return>.
Patch by Roger Serwy.

We concluded that adding registered mimetypes present in most systems' mime
databases can be considered a bug fix.

converting the old buffer for PyArgs_ParseTuple with *s

fix #10340: properly handle EINVAL on OSX and also avoid to call handle_connect() in case of a disconnetected socket which is not meant to connect.

Patch by Guilherme Polo.