New dependency: QtKeychain 0.1.0

[Teo Mrnjavac]

Hello,

we have a new dependency in master, QtKeychain [1], which will be
required in Tomahawk 0.8.0.
There's a single tag of QtKeychain so far, 0.1.0 so that's what we're using.

I have taken the liberty of putting together a PKGBUILD for Arch [2],
whatever you can do for other distros is much appreciated.

[1] https://github.com/frankosterfeld/qtkeychain
[2] https://aur.archlinux.org/packages/qtkeychain/

Thanks,
--
Teo Mrnjavac
http://teom.org | t...@kde.org