message: look for python in alternate custom location
diff: @@ -292,6 +292,11 @@ public class UnrealEnginePython : ModuleRules
  if (!string.IsNullOrEmpty(environmentPath))
  paths.Insert(0, environmentPath);
  + // look in an alternate custom location
  + environmentPath = System.Environment.GetEnvironmentVariable("UNREALENGINEPYTHONHOME");
  + if (!string.IsNullOrEmpty(environmentPath))
  + paths.Insert(0, environmentPath);
  +
  foreach (string path in paths)
  {
  string actualPath = path;
  