Add libsidplay2-dev to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1933
Add libsidplay2-dev to ubuntu-precise; resolves travis-ci/apt-package-whitelist#1933

Packages: libsidplay2-dev libsidplay2 libsidutils-dev libsidutils0 libresid-builder-dev libresid-builder0c2a

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