Update T4437, per JavaScriptFFI changes.

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Test for Trac #8242

Signed-off-by: Austin Seipp <aseipp@pobox.com>
Fix most AMP warnings.

Authored-by: David Luposchainsky <dluposchainsky@gmail.com>
Signed-off-by: Austin Seipp <aseipp@pobox.com>