Updated wire to use int64
Updated wire to use int64

AndrewSamokhvalov/lnd,BitfuryLightning/lnd,aakselrod/lnd,ddustin/lnd,aakselrod/lnd,LightningNetwork/lnd,BitfuryLightning/lnd,bryanvu/lnd,AndrewSamokhvalov/lnd,ddustin/lnd,bryanvu/lnd,LightningNetwork/lnd