now building three-math.js via build_all.* (fixed #2754)

utils/build_all.bat

@@ -4,3 +4,4 @@ python build.py --include canvas --minify --output ../build/three-canvas.min.js
 python build.py --include css3d --minify --output ../build/three-css3d.min.js
 python build.py --include webgl --minify --output ../build/three-webgl.min.js
 python build.py --include extras --externs externs/extras.js --minify --output ../build/three-extras.min.js
+python build.py --include math --output ../build/three-math.js

utils/build_all.sh

@@ -6,3 +6,4 @@ python build.py --include canvas --minify --output ../build/three-canvas.min.js
 python build.py --include css3d --minify --output ../build/three-css3d.min.js
 python build.py --include webgl --minify --output ../build/three-webgl.min.js
 python build.py --include extras --externs externs/extras.js --minify --output ../build/three-extras.min.js
+python build.py --include math --output ../build/three-math.js

utils/includes/math.json

@@ -0,0 +1,21 @@
+[
+	"../src/Three.js",
+	"../src/math/Clock.js",
+	"../src/math/Color.js",
+	"../src/math/Vector2.js",
+	"../src/math/Vector3.js",
+	"../src/math/Vector4.js",
+	"../src/math/Box2.js",
+	"../src/math/Box3.js",
+	"../src/math/Matrix3.js",
+	"../src/math/Matrix4.js",
+	"../src/math/Ray.js",
+	"../src/math/Frustum.js",
+	"../src/math/Plane.js",
+	"../src/math/Rectangle.js",
+	"../src/math/Sphere.js",
+	"../src/math/Math.js",
+	"../src/math/Quaternion.js",
+	"../src/math/Spline.js",
+	"../src/math/Triangle3.js"
+]