Implemented changes for scala 2.10.0-M7

Ports jackson-module-scala to scala 2.10.0-M7. This removes the dependency to scalabeans and uses scala 2.10.0-M7 reflections instead. 

Please see information about current compiler issues in the [README.md of my fork](https://github.com/svenwiegand/jackson-module-scala/blob/master/README.md).