some fixes to the treatment of extra column slots in [<-,GenomicRanges


git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/GenomicRanges@78353 bc3139a8-67e5-0310-9ffc-ced21a209358
After switching IntervalForests to CompressedIRangesList
Merge branch 'local-hedgehog'
version bump 1.13.34