Fixes a problem with fonts using cubic bezier curves (partial solution to #4590)

### Problem

In ```FontUtils.extractGlyphPoints``` the case for "cubic bezier curve" may never have worked:
* negative scaling of control points
  * since its initial [commit](https://github.com/mrdoob/three.js/commit/1286e5171b6c1a2edff2b70c5df1eb823941a503)
* wrong parameter order when calling ```path.bezierCurveTo```
  * introduced as wrong function ```path.quadraticCurveTo``` in [commit](https://github.com/mrdoob/three.js/commit/762f58a49015d9f2865d65abdbf3a76bfbf71bae)
  * changed to correct function ```path.bezierCurveTo``` in [commit](https://github.com/mrdoob/three.js/commit/cac14305d1304d69d2ecc36aaa17377efd89879d) without changing the parameter order.

The consequences as decribed in issue #4590, Version B can be seen here: http://jsfiddle.net/MnV2R/
This might also explain the problems with chinese fonts sometimes mentioned.

### Solution

The result of the patch can be seen here: http://jsfiddle.net/MnV2R/1/
This solves the basic problem of issue #4590, but not the consequences of the inconsistent winding order.