[Merge] lp:~aacid/qtubuntu/aboutToShow into lp:qtubuntu

[Ted Gould]

This looks like it is implementing something similar to the HUD Awareness protocol that Allison wrote for LibreOffice's about-to-show menu generation. Can we use that? U8 will have to support sending the events anyway for LO.
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https://code.launchpad.net/~aacid/qtubuntu/aboutToShow/+merge/319080
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