revert core build changes

.gitignore

Core/build.xml

Core/release/InternalPythonModules/README.txt

Core/release/modules/ext/LICENSE-2.0.txt

Core/release/modules/ext/Rejistry-1.0-SNAPSHOT.jar

Core/release/modules/ext/StixLib.jar

Core/release/modules/ext/Tsk_DataModel_PostgreSQL.jar

Core/release/modules/ext/activemq-all-5.11.1.jar

Core/release/modules/ext/c3p0-0.9.5.jar

Core/release/modules/ext/curator-client-2.8.0.jar

Core/release/modules/ext/curator-framework-2.8.0.jar

Core/release/modules/ext/curator-recipes-2.8.0.jar

Core/release/modules/ext/guava-16.0.1.jar

Core/release/modules/ext/jdom-2.0.5-contrib.jar

Core/release/modules/ext/jdom-2.0.5.jar

Core/release/modules/ext/jline-0.9.94.jar

Core/release/modules/ext/junit-3.8.1.jar

Core/release/modules/ext/jython-standalone-2.7.0.jar

Core/release/modules/ext/log4j-1.2.17.jar

Core/release/modules/ext/mchange-commons-java-0.2.9.jar