Add libghc-parsec3-dev to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1664
Add libghc-parsec3-dev to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1664

Packages: libghc-parsec3-dev libghc-parsec3-prof libghc-parsec3-doc

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