Fix bug 88275 by introducing an action menu that can be plugged into the toolbar to control random play, along with some renaming to make them easy to tell apart.

The action that brings up the menu is called "Random Play", while the various options are still individual KActions.

Random Play is what you want to add to your toolbar, not Use Random Play.

I've also added some icons for the different random play possibilities, but they aren't great IMO.  If anyone would like to make one or point me to some good ones, I'd appreciate it. :)

CCMAIL:88275-done@bugs.kde.org

svn path=/trunk/kdemultimedia/juk/; revision=342317