Build against Hadoop 2.2.0 by default

- The default Hadoop profile is now 2.0
- The default Hadoop version for the 2.0 profile is now 2.2.0
- Protobuf dependency updated to 2.5.0
- All generated protobuf files regenerated with the 2.5.0 compiler
Local localhost test configuration
Path changes for MacOSX
Add options for JDWP debugging; resize default RS heap to 1g