Add first bits of value stack implementation, smaller improvements
Expand and refactor DSL infrastructure to support the most important value stack operations
Implement `OpTree` nodes to work properly with value-stack

Update to Scala-2.10.3-RC1
Add `value-stack` tests and modify existing ones
Add examples and update existing ones
Smaller refactorings
Implement matching with quasiquote
Merge pull request #17 from alexander-myltsev/master

Value-stack implementation