Remove IsPrimitive and ToPrimitive, as they are no longer used.
Remove IBM copyright from calendars.js - shouldn't be there
Add functionality for the "shim", i.e. the ability to switch between our
implementation of Intl, and the browser's implementation, if it exists.
Merge pull request #6 from JCEmmons/master

Remove IsPrimitive and ToPrimitive, as they are no longer used.