Only define snprintf for versions older than VS2015
Only define snprintf for versions older than VS2015

Only define snprintf if the compiler is older than version 19.0

Praetonus/ponyc,Theodus/ponyc,jupvfranco/ponyc,ponylang/ponyc,cquinn/ponyc,kulibali/ponyc,jupvfranco/ponyc,malthe/ponyc,malthe/ponyc,dipinhora/ponyc,doublec/ponyc,ponylang/ponyc,jemc/ponyc,ryanai3/ponyc,kulibali/ponyc,boemmels/ponyc,jemc/ponyc,malthe/ponyc,kulibali/ponyc,CausalityLtd/ponyc,sgebbie/ponyc,CausalityLtd/ponyc,Perelandric/ponyc,mkfifo/ponyc,Theodus/ponyc,doublec/ponyc,boemmels/ponyc,mkfifo/ponyc,malthe/ponyc,boemmels/ponyc,jupvfranco/ponyc,boemmels/ponyc,Praetonus/ponyc,ponylang/ponyc,cquinn/ponyc,boemmels/ponyc,Praetonus/ponyc,jupvfranco/ponyc,doublec/ponyc,Praetonus/ponyc,jemc/ponyc,sgebbie/ponyc,sgebbie/ponyc,sgebbie/ponyc,dipinhora/ponyc,mkfifo/ponyc,mkfifo/ponyc,Perelandric/ponyc,cquinn/ponyc,lukecheeseman/ponyta,cquinn/ponyc,CausalityLtd/ponyc,Theodus/ponyc,Theodus/ponyc,Theodus/ponyc,jupvfranco/ponyc,sgebbie/ponyc,lukecheeseman/ponyta,ryanai3/ponyc,kulibali/ponyc,Perelandric/ponyc,dipinhora/ponyc,Perelandric/ponyc,lukecheeseman/ponyta,mkfifo/ponyc,Perelandric/ponyc,ryanai3/ponyc