New dependency: (google-)sparsehash

[Uwe Korn]

Hello, 

we have a new dependency in master, sparsehash [1] which will be required in Tomahawk 0.8.

Every version of sparsehash should work fine with Tomahawk. As for now there are packages for it

in Fedora [2], OpenSuse [3], Ubuntu [4] and Gentoo [5].

Looki

Thanks,

Uwe

[1] https://code.google.com/p/sparsehash/

[2] https://apps.fedoraproject.org/packages/sparsehash

[3] http://software.opensuse.org/package/sparsehash

[4] http://packages.ubuntu.com/trusty/libsparsehash-dev

[5] http://packages.gentoo.org/package/dev-cpp/sparsehash