message: Improve parsing the version in AliDataFile
diff: @@ -20,7 +20,7 @@ std::string AliDataFile::GetFileName(const std::string &url) {
  if ((env = gSystem->Getenv("ALIPHYSICS_VERSION"))) {
  buf = env;
  size_t cut = buf.rfind('-'); // remove build number
  - size_t us = buf.rfind('_');
  + size_t us = buf.find('_');
  if (cut != std::string::npos) {
  if (us != std::string::npos && us < cut) cut = us;
  ver = buf.substr(0, cut);
  