there is no need to check the depdencyCache onaddDep().  Only cache deps on thaw.  Additionally, remove redundant TroveDependencies.thawDependency class method
there is no need to check the depdencyCache onaddDep().  Only cache deps on thaw.  Additionally, remove redundant TroveDependencies.thawDependency class method

fedora-conary/conary,fedora-conary/conary,fedora-conary/conary,fedora-conary/conary,fedora-conary/conary