TAJO-66: Support compiling and running Tajo with Java7 by Tejas Patil (Thanks for the patch)
TAJO-69: Add .reviewboardrc file to the ignore lists of Rat and .gitignore. (hyunsik)
TAJO-40: Adopt YarnClient to GlobalEngine. (jihoon)
TAJO-71: Case-insensitive parser. (hyunsik)
TAJO-72: Rename NQL.g to SQL.g. (hyunsik)
TAJO-7: Enabling TajoCli to take multiple lines as one statement
updated changes
TAJO-74: Refactor parser rules of SQL.g. (hyunsik)
TAJO-75: Separate SQL.g into SQLParser.g and SQLLexer.g. (hyunsik)
TAJO-22: The package prefix should be org.apache.tajo. (DaeMyung Kang via hyunsik)
TAJO-77: Rename TabletProto as FragmentProto in CatalogProtos.proto. (jihoon)
TAJO-81: Update the home page with Tajo logo. (hyunsik)
TAJO-79: Refactor and Improve TajoCli. (hyunsik)
TAJO-82: NullPointerException occurs when Schema is converted as an array of columns. (jihoon)