Merge lp://qastaging/~unity-team/compiz/x-sru5 into lp://qastaging/compiz/xenial

unity-lowgfx: use better effect for grid

debian/changelog: add missing bug references

Use AnyPropertyType when getting _MOTIF_WM_HINTS property.

move: damage all the border area in outline mode and ignore transparent colors

Also we don't really need to damage at every X event. It's just about doing it
right the firs time, by including the exceeding space.
Also optimize damanging in outline-mode, by only touching such regions

Plus add some optimizations when not blending, as we don't care about the alpha channel

grid: ignore alpha in colors when not blending, and fix animations

The fade-out animation was still happening when the duration was set to 1,
while it was broken when it was 0. Fixed both.

In unity-lowgfx.ini set the animation duration to 0 in grid and d not
draw stretched windows. Enable blending again as it's really not
expensive in this case, while not having it, really makes the user
experience a lot poorer.

resize: add support for disabling transparency and avoid over-damaging in outline mode

Screen: add averageColor to get the current desktop average color

We get the value from the root window and we parse it using regex.
Also use this in 'move', 'resize' and 'grid' plugins by default, doing the
appropriate lightening / darkening to make this working properly
on the desktop surface

Bumping micro version

debian: go back setting COMPIZ_CONFIG_PROFILE in X11 scripts

debian: tune unity-lowgfx profile and add upgrades

unity-lowgfx.ini: remove unsupported unity option