Make all xxxStatement types derive from HaxeStatement.
Merge branch 'ClassHierarchy' into CHBnfChanges
Regenerate parser files.
Work toward getting Call Hierarchies to display properly.  [They don't yet.] :(
Change PSI leaf node elements to PsiJavaTokens.
Mixin Java functionality for HaxeTypeParam and HaxeTypeListPart.
Mix PsiJavaCodeReferenceElement into HaxeReference, instead of PsiReference.
Reparented HaxeClassReferenceImpl from HaxeReferenceImpl to HaxeExpressionImpl.
Added new class HaxePsiTypeAdapter so we can use the PsiType interface.
Merge branch 'ClassHierarchy' into CHBnfChanges
Fix an NPE when no class is found in a file.
Push getTypeList down into HaxeInherit.
Reimplement HaxeInheritPsiMixinImpl.getReferenceElements();
Fix NotNull error in HaxeReferenceImpl.advancedResolve().
Implemented HaxeMethodPsiMixinImpl.getTypeParameterList()
Fix regression for TypeHierarchy not showing sub-/super-classes
Fix parsing error introduced with other statement changes.
Don't resolve package names to parent types (until we know better).
Merge branch 'CHBnfChanges' into ClassHierarchy