Gentoo support added by Dan Molik dan@d3fy.net 2014-09-03

Cwtool changes were made to run package and service commands on Gentoo.
Changes include autodetecting portage, openrc and eix, and extensive use
of eix to minimize running emerge, as traversing the package tree is costly.

All cwtool functions implemented, pkg-latest will need upstream support
to query a specific package from a remote repository.
Merge branch 'master' of github.com:GrayTShirt/clockwork