Upgrade on Synology smooth with one small hitch

[simoncn]

The equivalent to tagCustom in MinimServer 2 is upnpCustom. Unlike tagCustom which required this strange default and was hard to explain and understand, the equivalent default for upnpCustom is nothing (empty). For the small number of users who have needed to change the default tagCustom setting to something else, MinimServer 2 automatically migrates this setting to the equivalent setting in upnpCustom. For an example of this, see this post.