Initial changes to dependencies to build lift against 2.11.0 final
Added scala-xml a dependency starting with scala 2.11.0
Added newer version of scala-jpa
Added scala parser cobinator library as dependencies
Lift-Markdown compiles
Added a Position.scala file which was made private in scala 2.11.0
but they do not offer any replacement and we need it.
Added 2.11.0 as a version we cross compile
Use latest version of combinators library
Modified the default root project, lift-framework, to exclude json_scalaz by default.
Added a new project, `lift-framework-with-scalaz6` which adds json_scalaz and can be used
when you need lift json scalaz that uses scalaz 6

To use it you need to:

1. ++2.10.4
2. project lift-framework-with-scalaz6
3. compile //or any task you need, test, publish-local, etc

This means that from now one, if you work as you used to, you will not be comppiling lift-json-scalaz based on scalaz 6, but instead
you will be using lift-json-scalz7 based on scalaz7
scalaz7 uses 2.11 prefix, not 2.11.0
Merge remote-tracking branch 'origin/master' into diego_scala_2_11

Conflicts:
	build.sbt
	project/Dependencies.scala