Support for packages scattered over multiple directories; Removed EclipsePsi combo data source
Copyright got removed from generated java file
PsiJavaStubModelDescriptor now inherits from ReloadableSModelBae
Merge branch '3.0/danya'

Conflicts:
	IdeaPlugin/mps-java/models/jetbrains/mps/idea/java/psiStubs.mps
	IdeaPlugin/mps-java/source_gen/jetbrains/mps/idea/java/psiStubs/PsiJavaStubModelDescriptor.java
	IdeaPlugin/mps-java/source_gen/jetbrains/mps/idea/java/psiStubs/trace.info