Item9693: Add example for throw of AccessControlException

git-svn-id: http://svn.foswiki.org/branches/Release01x01/core@16484 0b4bb1d4-4e5a-0410-9cc4-b2b747904278
Item9693: More examples for throw / catch

git-svn-id: http://svn.foswiki.org/branches/Release01x01/core@16485 0b4bb1d4-4e5a-0410-9cc4-b2b747904278