Add ghc-7.10.3 to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1627
Add ghc-7.10.3 to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1627

Packages: ghc-7.10.3 ghc-7.10.3-prof ghc-7.10.3-dyn ghc-7.10.3-htmldocs

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