rename ScopeTree to RootScope, this fixes #1

scope/src/main/jastadd/ScopeTree.relast

scope/src/main/jastadd/Shadowing.jrag

scope4j/src/main/jastadd/ProgramToScopeTree.jrag

scope4j/src/main/jastadd/ProgramToScopeTree.relast

scope4j/src/main/java/org/extendj/ScopeAnalysis.java

scope4m/src/main/jastadd/ModelicaToScopeTree.jrag

scope4m/src/main/jastadd/ModelicaToScopeTree.relast

scope4m/src/main/java/org/jmodelica/ScopeAnalysis.java