Merge branch 'master' of github.com:/Tox/toxic
Merge branch 'master' of github.com:/Tox/toxic
Merge branch 'master' of github.com:/Tox/toxic
Sync with new libtoxcore build system

First try to use pkg-config to find libtoxcore, fall back to manual
checks if pkg-config is not available.

Improve ncurses search, should now find everything on OSX.
Fixed travis build
Merge pull request #7 from jin-eld/update-build-system

Update build system