Implement plCreatableGenericValue
This is sent in the creatable list when we get a LinkingMgrMsg.
Implement plLinkingMgrMsg
This message comes in when somebody does "Net.LinkToPlayersAge" and only admins should be able to do that.
Implement plClimbMsg
Implement pfBackdoorMsg
Another message that is for admin use only. It allows us to properly execute python backdoors.