Expose array field types

compiler/teal2/frontend/TypeAnalysis.jrag

@@ -30,10 +30,15 @@ aspect TypeAnalysis {
 
 	TypeDecl implements TypeDefinition;
 	TypeVarDecl implements TypeDefinition;
+	Type implements TypeDefinition;
 
-	syn TypeDefinition Type.qualifiedTypeDefinition() {
+	syn IdDecl Type.memberLookup(String s) {
 		TypeDefinition td = (TypeDefinition) getIdUse().lookup().getDecl();
-		return new QualifiedTypeDefinition(td, getTypeQualifiers());
+		return td.memberLookup(s);
+	}
+
+	syn TypeDefinition Type.qualifiedTypeDefinition() {
+		return this;
 	}
 
 	// The following gives us the type of the expression if and only if we know the type precisely