See http://boinc.berkeley.edu/trac/wiki/PrefsUnification

Discrepancies:
- "Consider the computer in use" pref isn't disabled when the two
  "suspend X when computer is in use" prefs are unset.
  Doing this would have greatly complicated things.
- day-of-week prefs aren't implemented

No tooltips yet.

MGR: Fix a mysterious bug which sometimes prevented list headers from being drawn when using generic wxListCtrl.

MGR: Immediately save changes to the registry when sort column or direction is changed, or when user changes which columns are hidden.
We can't immediately save changes to the registry when a user rearranges columns by dragging them, because MS Windows does not send a notification so wxWidgets can't generate an event.

 - New dialog also allows restoring column configurations to defaults.

For projects (like Lattice) that assign a WU's HR class when it's created,
we don't want the mechanism that clears the HR class
if there are error results and no in-progress of completed results.
This option suppresses this.

There was a bug where, when you suspend GPU activity,
GPU jobs show as suspended but are not actually suspended.
This was because of recent changes to distinguish GPU and non-GPU coprocs.
Change things so that coprocs are by default GPUs.
If you want to declare a non-GPU coproc in your cc_config.xml,
you much put <non_gpu/> in its <coproc> element.

VBOX: Fix crash if DVD-ROM media had been ejected by some external event.  Technically this shouldn't be happening, but something funky is going on with VirtualBox and we need to handle things that may cause a crash when cleaning up the VM.