[python] wait for process exit in sys.io.Process.exitCode (see #4083)
[python] wait for process exit in sys.io.Process.exitCode (see #4083)

pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe