logic: show java import not found as error

* implemented resolving nested types, methods and fields in import statements
* updated java-symbol-solver and corresponding jars
* renamed toNameHierarchy methods of Java...Name classes
* renamed Java name resolvers

java_indexer/src/io/coati/JavaDeclName.java

@@ -69,12 +69,12 @@ public class JavaDeclName
 		return m_name;
 	}
 	
-	public String toNameHierarchy()
+	public String toSerializedNameHierarchy()
 	{
 		String nameHierarchy = "";
 		if (m_parent != null)
 		{
-			nameHierarchy = m_parent.toNameHierarchy();
+			nameHierarchy = m_parent.toSerializedNameHierarchy();
 			nameHierarchy += "\tn";
 		}