Re: R package CI test failures

[Gordon Ball]

Pushed some fixes to git/svn:

 * r-cran-doparallel: extra test dependency r-cran-rpart, patch which
removes an attempt to write a report within the (read-only) package dir
 * r-cran-matrixstats: cp and rm in run-unit-test didn't work with subdirs
 * r-cran-mlmrev: wrong package name in run-unit-test
 * r-bioc-annotationhub: test expects a writable $HOME, requires
r-bioc-genomicranges; but does then attempt to download data during the
test so might fail anyway
 * r-bioc-limma: test dep on r-cran-mass
 * r-bioc-snpstats: test dep on r-cran-hexbin