ScrollLock, and Pause, since that's what's on the standard Apple keyboards
 (minus the laptops, which have neither set). Ideally we'll find a better way
 to distinguish this...the keys being replaced would be correct on a USB
 keyboard for Windows. Sigh.

   Fixes Bugzilla #301.

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%402267