SVG 1.1 dynamic update tests

Tests dynamic updates of the 'scale' property of the SVGFEDisplacementMapElement object

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".

PASS displacementMap.scale.baseVal is 34
PASS displacementMap.scale.baseVal is 64
PASS successfullyParsed is true

TEST COMPLETE