This moves libappindicator to use a different upstream source. Rather
than use the 8 year old (!) version displayed on its homepage
(https://launchpad.net/libappindicator), this switches us to the
maintained lp:libappindicator branch, browseable over here:
https://code.launchpad.net/~indicator-applet-developers/libappindicator/trunk.
This includes numerous fixes, remains updated, and matches what ubuntu
uses.
Due to a personal preference for git over bzr, I have the package using
ubuntu's git mirror of the package for the source rather than the bzr
repo where I _think_ development actually takes place.
This also removes the no-python patch, because per revision 292
(https://bazaar.launchpad.net/~indicator-applet-developers/libappindicator/trunk/revision/292),
that has been dropped from upstream already, so the patch is no longer
needed.
The primary motivation behind this change is to fix a crash with
libappindicator (reported
https://bugs.launchpad.net/ubuntu/+source/libappindicator/+bug/1867996
and in various other places).
The relevant patch for that should be included in this version.