Update jQuery 1.7 externs to allow jQuery.when to take multiple arguments.
Update jQuery 1.7 externs to allow jQuery.when to take multiple arguments.

R=johnlenz

git-svn-id: 818616af560c21f974e3119d89e3310384da871a@2033 b0f006be-c8cd-11de-a2e8-8d36a3108c74

knutwalker/google-closure-compiler,knutwalker/google-closure-compiler