Specified that the BestAvailableTransport does not know anything about the internals of the other transport classes.
Specified that the BestAvailableTransport does not know anything about the internals of the other transport classes.

aaron-goshine/easyXDM,oyvindkinsey/easyXDM,lanson647/easyXDM,aaron-goshine/easyXDM,cake-disposal-squad/easyXDM,jmptrader/easyXDM,jspath/easyXDM,oyvindkinsey/easyXDM,jspath/easyXDM,chazen/easyXDM,jmptrader/easyXDM,oyvindkinsey/easyXDM,oyvindkinsey/easyXDM,chazen/easyXDM,chazen/easyXDM,jspath/easyXDM,lanson647/easyXDM,lanson647/easyXDM,cake-disposal-squad/easyXDM,cake-disposal-squad/easyXDM,aaron-goshine/easyXDM,oyvindkinsey/easyXDM,jmptrader/easyXDM