Openbox includes a Python script (openbox-xdg-autostart)
which implements the XDG autostart spec
(https://www.freedesktop.org/wiki/Specifications/autostart-spec/).
The switch of the default Python to 3.6 in ports r498529 broke the script.
The added patch makes the script work again with both Python 2 and 3.
Luckily the only problem was "print" being changed from a keyword
to a regular function.
PR: 237319
Submitted by: Sebastian Schwarz
