Stabilize and fix comparisons in animator tests.

compare() will compare properties of objects and neither Qt.rgba nor
image.pixel created objects has enumeratable properties so compare
is pretty much useless. Use verify + == which will rely on toString()
which is ok.

A few of the tests relied on execution order of signals emitted on
animation.running being changed and would occasionally fail.

Change-Id: I531c7f21b58a922a6be9ca2b6de120a68209a6d6
Reviewed-by: Michael Brasser <michael.brasser@live.com>