Add libapr1 to ubuntu-precise; resolves travis-ci/apt-package-whitelist#983
Add libapr1 to ubuntu-precise; resolves travis-ci/apt-package-whitelist#983

Packages: libapr1 libapr1-dev libapr1-dbg

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