audio/musicpd and libsndfile dependency

[David Demelier]

Hello,

I've just realized that libsndfile is required for musicpd. see :

$ ldd /usr/local/bin/musicpd
	...
	libFLAC.so.10 => /usr/local/lib/libFLAC.so.10 (0x802331000)
	libsndfile.so.1 => /usr/local/lib/libsndfile.so.1 (0x802468000)
	libaudiofile.so.0 => /usr/local/lib/libaudiofile.so.0 (0x8025d1000)
	...

And :

$ pkg_info -R libsndfile-1.0.24
Information for libsndfile-1.0.24:

Required by:
sfml-1.6

It seems that musicpd implicitly link to libsndfile if it is installed 
on the system. May I propose a PR with a new option to disable/enable 
this linkage using an OPTION?

Cheers,

-- 
David Demelier