merge from git

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/flowCore@80073 bc3139a8-67e5-0310-9ffc-ced21a209358
make sure endian is set to 'little' when do readBin from packBits
Merge commit 'cec3b969eed37c1cd129b7bef03a1baa786b7e9a' into trunk
make sure endian is set to 'little' when do readBin from packBits