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/entity/AEBaseEntityItem.java

@@ -41,7 +41,7 @@ public abstract class AEBaseEntityItem extends EntityItem
 	}
 
 	@SuppressWarnings( "unchecked" )
-	public List<Entity> getCheckedEntitiesWithinAABBExcludingEntity( final AxisAlignedBB region )
+	protected List<Entity> getCheckedEntitiesWithinAABBExcludingEntity( final AxisAlignedBB region )
 	{
 		return this.worldObj.getEntitiesWithinAABBExcludingEntity( this, region );
 	}