Add an option to enable proxy for deprecated KDE systray protocol (may help for bug #1836 eventually).

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Fix bug with WM hints for focus not being updated properly, fix bug with gtk+ apps seen as focused even when iconified (!)

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Fix the shortcut manager to not show additional un-managed shortcuts.

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Don't consider windows that have the below/ontop property as older legacy windows trying to achieve fullscreen mode (should fix the issue reported on the ML).

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Update of xfwm4 by Carles Muñoz Gorriz



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Get rid on libXpm dependency by reimplementing the XPM loader with color symbol substitution (beware, it's a pretty huge change, handle with care).

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