menu_link_save doesn't like aliases (drupal)

A quick tip.. while working on an install profile in Drupal I discovered that the menu_link_save() function requires an internal URL, e.g. "node/123" instead of "my-cool-page". Once I tracked down the issue I was able to very easily create lots of menu items as needed, but it wasn't entirely obvious this was needed. I was using install_profile_api to create the menu items and figured it was going to make things easier for the end user, but alas no, so I threw together a quick patch to save others the headache, and wasted hours of development time.