Review Request: Use the same main and alternate shortcuts for "Show Hidden Files" in KFileDialog and Dolphin (Alt+. and F8)

[Darío Andrés]

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http://reviewboard.kde.org/r/696/
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Review request for kdelibs.


Summary
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This sets the shortcuts for the Show Hidden Files action in KFileDialog to Alt+. and F8.
I don't know if this patch is OK as it uses a qobject_cast (as the proper function is implemented on KAction but we actually get a QAction). Or if I need to do this inside KDirOperation (where the showHiddenFiles action is actually created)


This addresses bug 184408.
    https://bugs.kde.org/show_bug.cgi?id=184408


Diffs
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  svn://anonsvn.kde.org/home/kde/trunk/KDE/kdelibs/kfile/kfilewidget.cpp 967040 

Diff: http://reviewboard.kde.org/r/696/diff


Testing
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The both shortcuts works properly on file dialogs.


Thanks,

Darío