add ncmpcpp pkg

[mitchweaver]

ncmpcpp a featureful ncurses based MPD client inspired by ncmpc.

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Normally distros include the visualizer and clock in their package, and is one of the reasons people like ncmpcpp. So I added them in by default, with a comment block allowing people to edit it out if they don't want it.

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Note on gnu-readline dep: it kept complaining about readline RL_TERMINAL_* messages, but after installing gnu-readline these errors went away. Maybe this dep isn't needed and can be patched, but I'm not that experienced with that sort of thing.

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Note on libmpdclient dep: This is required to interface with mpd, see my other pull request for this pkg.

[rofl0r]

the author pointed out that he has proper release tarballs available: by using this one http://rybczak.net/ncmpcpp/stable/ncmpcpp-0.8.1.tar.bz2 we dont need the automake dependency