Fix the remaining test failures in the jsonbinding autotest

Skip properties that are function objects when converting a V4 Object to a
QJsonObject. For arrays the function object gets replaced with null.
Fix the test case for arrays to have the correct expected output.

Change-Id: I3ee63935d038e0922e33ac6e64e9c31ecfbd4a7e
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Fix qmlmin test

Exclude the test262 test suite, as qmlmin can't deal with
all of the test cases there.

Change-Id: Ie56c0d9adecc6b1ae0ddcbcd3edd5b0eaf30cd4d
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>