Added statements for default:rail acceleration - default:rail , overriden but defined in carts mod are now able to be   connected to mesecons systems and increase carts' speed as copper rails   actually do.
Added statements for default:rail acceleration
- default:rail , overriden but defined in carts mod are now able to be
  connected to mesecons systems and increase carts' speed as copper rails
  actually do.

paly2/minetest-minetestforfun-server,Ombridride/minetest-minetestforfun-server,LeMagnesium/minetest-minetestforfun-server,MinetestForFun/minetest-minetestforfun-server,Coethium/server-minetestforfun,Gael-de-Sailly/minetest-minetestforfun-server,Ombridride/minetest-minetestforfun-server,Gael-de-Sailly/minetest-minetestforfun-server,MinetestForFun/server-minetestforfun,crabman77/minetest-minetestforfun-server,crabman77/minetest-minetestforfun-server,sys4-fr/server-minetestforfun,LeMagnesium/minetest-minetestforfun-server,Gael-de-Sailly/minetest-minetestforfun-server,MinetestForFun/server-minetestforfun,MinetestForFun/minetest-minetestforfun-server,crabman77/minetest-minetestforfun-server,Coethium/server-minetestforfun,MinetestForFun/server-minetestforfun,Coethium/server-minetestforfun,paly2/minetest-minetestforfun-server,sys4-fr/server-minetestforfun,sys4-fr/server-minetestforfun,MinetestForFun/minetest-minetestforfun-server,LeMagnesium/minetest-minetestforfun-server,Ombridride/minetest-minetestforfun-server