Added @Ignore to the annotation based Config system. (#4696)

src/main/java/net/minecraftforge/common/config/Config.java

@@ -79,6 +79,11 @@ public @interface Config
         String[] value();
     }
 
+    @Retention(RetentionPolicy.RUNTIME)
+    @Target(ElementType.FIELD)
+    @interface Ignore
+    {}
+
     @Retention(RetentionPolicy.RUNTIME)
     @Target(ElementType.FIELD)
     @interface RangeInt

src/main/java/net/minecraftforge/common/config/ConfigManager.java

@@ -222,6 +222,8 @@ public class ConfigManager
                 continue;
             if (Modifier.isStatic(f.getModifiers()) != (instance == null))
                 continue;
+            if (f.isAnnotationPresent(Config.Ignore.class))
+                continue;
 
             String comment = null;
             Comment ca = f.getAnnotation(Comment.class);