HIVE-4601 : WebHCat needs to support proxy users (Eugene Koifman via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1518894 13f79535-47bb-0310-9956-ffa450edef68
HIVE-4460 : Publish HCatalog artifacts for Hadoop 2.x  (Eugene Koifman via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1518897 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HIVE-4779-trunk-gd