Add libsndfile1-dev to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1801
Add libsndfile1-dev to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1801

Packages: libsndfile1-dev libsndfile1 sndfile-programs libsndfile1-dbg sndfile-programs-dbg

travis-ci/apt-package-whitelist,travis-ci/apt-package-whitelist