Portage/Dependency.hs: added comparison against nonstrict bounds

    Writing live-sequencer-0.0.4.ebuild
    hackport: i am too lazy to implement LBound:compare
    NonstrictLB (Version {versionNumber = [0,2,1], versionChar = Nothing, versionSuffix = [], versionRevision = 0})
    NonstrictLB (Version {versionNumber = [0,2], versionChar = Nothing, versionSuffix = [], versionRevision = 0})

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>