Added a double inclusion safeguard
Added a double inclusion safeguard

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