Changed the version of tajo-hcatalog to 0.8.0. 

[maven-release-plugin] copy for tag release-0.8.0-rc0 

Removed Protobuf-java-format license from NOTICE.txt due to BSD. 

Removed Protobuf-java-format license from NOTICE.txt due to BSD. 

TAJO-288: Correct NOTICE file and LICENSE.txt. (hyunsik) 

Changed 0.2.0-SNAPSHOT in pom.xml files to 0.2.0-incubating. 

TAJO-278: Add ASF License 2.0 header to *.jsp and web.xml files. (hyu… …nsik)