Otherwise all the paths end up with the /usr/local prefix and e.g.
the timezone map doesn't find its images.

We need _isys.so in the $UPDATES/pyanaconda/isys so that it can be imported
from the updated $UPDATES/pyanaconda/isys/__init__.py module. Also we need
both these files in $UPDATES/pyanaconda/isys if either of them changed.

The idea here is that by adding a gradient up top, the "Done" button looks
more like it belongs with the header than with the widgets down in the
spoke.  It also subtly makes the spoke look like a subpart of the hub.

Adding this required adding an additional internal widget, which means also
changing all existing glade files to include this internal widget.  Make sure
to build new glade support and install locally (or use the proper makefile
targets) before editing.

I guess I'm the only person to touch isys in a very long time, huh?

/tmp is tmpfs and is created at boot time, so we cannot unpack our
updates there in dracut as they will be lost.  Instead unpack them to
/run/initramfs/inst.{updates,product} and create a symlink when anaconda
starts so that it can continue to look for content there.

This is all handled by lorax now, and having it in two places is confusing.