Multiple lights no longer clamping at [1,1,1]

[mwitchwilliams]

Testing https://github.com/gearvrf/GearVRf-Tests/tree/master/x3d/animation/animation02.x3d about 3 months ago, produced the following image:

The X3D file has 5 lights: a white <PointLight> at [0 -2 -4] plus 4 directional lights:
// 2) reddish light toward -x axis
<DirectionalLight color="1 .25 .25" direction="-1 0 0"/>
// 3) greenish light toward +x axis
<DirectionalLight color=".25 1 .25" direction="1 0 0"/>
// 4) 25% white light toward -z axis
<DirectionalLight color=".25 .25 .25" direction="0 0 -1"/>
// 5) blueish light toward +z axis
<DirectionalLight color=".25 .25 1" direction="0 0 1"/>

The current rendering now looks like this (there is a rotating plane in the scene used to show the green and red lights):

Plane is rotated further so it is not seen here, which is as expected.

I'm guessing the light algorithm no longer clamps RGB at [1, 1, 1]. Perhaps now, the <PointLight> RGB [1,1,1] and <DirectionalLight> RGB [.25,.25.25] toward the -z axis is: [1, 1, 1] + [.25, .25, .25] for [1.25, 1.25, 1.25] instead of clamping at [1, 1, 1].

Here is X3D file plus texture maps
animation02.zip

Issue showing up for both master and maint_v3.x releases.