message: Make Redex fail if libraryjars can't be loaded
  Summary: Make Redex fail if it can't find a libraryjar.
diff: @@ -448,10 +448,9 @@ int main(int argc, char* argv[]) {
  pg_config.basedirectory + "/" + library_jar.c_str();
  if (!load_jar_file(basedir_path.c_str())) {
  fprintf(stderr,
  - "WARNING: Error in jar %s - continue. This may lead to "
  - "unexpected "
  - "behavior, please check your jars\n",
  + "ERROR: Library jar could not be loaded: %s\n",
  library_jar.c_str());
  + exit(1);
  }
  }
  }
  