Merge pull request #501 from maryannxue/master

Issue #20 - Hash join implementations
Merge remote-tracking branch 'upstream/master'
Updating eclipse preferences to include standard license text for new java files. Fixing java doc and compilation warnings.
Merge pull request #509 from maryannxue/master

Issue #504 Use Future through parallel executor for star joins
Fixing NPE when using a nested row value constructor. Reenabling the associated test for nested rvc.
Phoenix#466
Merge pull request #511 from samarthjain/phx2.2

Updating eclipse preferences to include standard license text for new ja...
customize CSV file delimiter
Changes
changes
Phoenix#466
putting back original constructor so that unit test passes
Merge pull request #513 from mravi/master

Phoenix#466
Minor fixes to DROP dropping HBase metadata by default as well
Fix for drop of HBase meta data on table drop
Update pom to use Hadoop 1.2.x dependency
Bug fix for #520 (select of group by column when using index)
incorporate feedback and add unit test
fix comment
fix minor comment