Made the Name error say which class caused the issue

JavaIntegration/src/main/java/org/openzen/zencode/java/JavaNativeModule.java

 				className = className.substring(className.lastIndexOf('.') + 1);
 			} else if (specifiedName.indexOf('.') >= 0) {
 				if (!specifiedName.startsWith(pkg.fullName))
-					throw new IllegalArgumentException("Specified @Name as " + specifiedName + " but it's not in the module root package");
+					throw new IllegalArgumentException("Specified @Name as \"" + specifiedName + "\" for class: \"" + cls.toString() + "\" but it's not in the module root package");
 
 				classPkg = getPackage(basePackage + specifiedName.substring(pkg.fullName.length()));
 				className = className.substring(className.lastIndexOf('.') + 1);