Mod main-pom, build-tools-pom, and build-oozie.sh

- Updated main-pom to use oozie 4.0.1
- Altered source uri for oozie tarball
- Added differential support for oozie 4.0.0 vs. 4.0.1
- Added maven parameters for oozie build using hadoop version,
  java version, target java version=1.6 (required)