update with aux svn info, csv output

Signed-off-by: Colin McCabe <cmccabe@alumni.cmu.edu>
patchr.py: add branch-2.1-beta, HDFS-4949 revs

Signed-off-by: Colin McCabe <cmccabe@alumni.cmu.edu>
add mvn-all-topo-tests.sh

Signed-off-by: Colin McCabe <cmccabe@alumni.cmu.edu>