Process: Do not create console on Windows OS (HaxeFoundation#1004)

Using the standard api to launch a process on Windows OS creates a console window. With this fix, it should match the behavior of other operating systems.

Author: dimensionscape

src/hx/libs/std/Process.cpp

@@ -250,7 +250,7 @@ Dynamic _hx_std_process_run( String cmd, Array<String> vargs, int inShowParam )
       //printf("Cmd %s\n",val_string(cmd));
       PROCESS_INFORMATION pinf;
       memset(&pinf,0,sizeof(pinf));
-      if( !CreateProcessW(NULL,(wchar_t *)name,NULL,NULL,TRUE,0,NULL,NULL,&sinf,&pinf) )
+      if( !CreateProcessW(NULL,(wchar_t *)name,NULL,NULL,TRUE,CREATE_NO_WINDOW,NULL,NULL,&sinf,&pinf) )
       {
          hx::ExitGCFreeZone();
          hx::Throw(HX_CSTRING("Could not start process"));