Reduces visibility of internal fields/methods

Reduces the visibility of all fields to private and create setters/getters
when necessary. Exceptions are fields with GuiSync as these need to be
public.

Reduces the visibility of internal methods to private/protected/default when possible.

src/main/java/appeng/recipes/MissedIngredientSet.java

@@ -33,7 +33,7 @@ public class MissedIngredientSet extends Throwable
 		this.resolverResultSet = ro;
 	}
 
-	public ResolverResultSet getResolverResultSet()
+	ResolverResultSet getResolverResultSet()
 	{
 		return this.resolverResultSet;
 	}