@<- has been moved from methods to base, so it no longer needs to
be imported in package NAMESPACEs.


git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/SNPchip@72298 bc3139a8-67e5-0310-9ffc-ced21a209358
merge master with collab

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/SNPchip@72707 bc3139a8-67e5-0310-9ffc-ced21a209358