Adds the Tomahawk music player (https://www.tomahawk-player.org/) in
version 0.8.1 and all its required and optional dependencies.
* tomahawk:
tomahawk: Add new package, version 0.8.1.
libjreen: Add new package, version 1.2.0.
websocketpp: Add new package, version 0.4.0.
lucenepp: Add new package, version 3.0.6.
qtkeychain: Add new package, version 0.4.0.
libechonest: Add new package, version 2.3.0.
quazip: Use qt instead of qt5 for refering to Qt.
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