Changes to TestVisibilityLabelsWithSetAuths
Merge branch 'new_visibility' of https://github.com/apurtell/hbase-private into new_visibility
Javadocs in VisibilityClient
clear_auths shell support
Merge remote-tracking branch 'private/new_visibility' into new_visibility

Conflicts:
	hbase-shell/src/main/ruby/hbase/visibility_labels.rb