oapiCameraRotationMatrix missing documentation

[spacex15]

title says it all !

[schnepe2]

If I had to guess, it would be somethig like this:

	/**
	 * \brief Returns a rotation matrix which performs the transformation
	 *   from the camera rotation into global coordinates.
	 * \param rmat pointer to a matrix receiving the rotation data
	 * \sa oapiCameraGlobalPos, oapiCameraGlobalDir
	 */
OAPIFUNC void oapiCameraRotationMatrix (MATRIX3 *rmat);

But @mschweiger has to do the \note and check if this is really what it does 😀

And yes, no documentation is bad - but no documentation is better than wrong documentation!

[mschweiger]

Couldn't have formulated it better myself, so I took the liberty of using your suggestion verbatim. 👍