fix the error in .qaCheck caused by more strict operation on empty factors of new R

git-svn-id: https://hedgehog.fhcrc.org/bioconductor/trunk/madman/Rpacks/QUALIFIER@71791 bc3139a8-67e5-0310-9ffc-ced21a209358
it now tries to merge the pData from GatingSet with external meta data. The pData of gatingSet has to contain at least one column:'name',which is FCS filename.close #29
bump version
Merge commit '6667a9c1192f2894735e29f4fc7f1e0a2a992ae6' into trunk