Merge pull request #2 from markhamstra/master-csd

Backport [SPARK-979] Randomize order of offers.
Update to allow non-global specification off TTL's for cleaning.
Merge pull request #4 from jhartlaub/master-csd

REL-257 Update to allow non-global specification off TTL's for cleaning.
Fix repo location.
release:prepare
Update maven-release-plugin version to deal with latest git.
[maven-release-plugin] prepare release spark-parent-0.8.2-candidate-csd-4
[maven-release-plugin] prepare for next development iteration
adding full outer join support
update comment in pyspark code
Merge pull request #5 from vnivargi/master-csd

adding full outer join support