am d40a53b4: am 9a75b4ec: am d408e607: Merge "Disable tail call optimization and use -mstackrealign to boot up on fugu."

* commit 'd40a53b4940660aa0181e4bbd118fc2bbf5373b2':
  Disable tail call optimization and use -mstackrealign to boot up on fugu.