Adam Farkas asks about contributed code from non-aD folks.

The answer as I understand it is that the developer gets to choose the license.  He could release the code under the GPL, APL, MPL, SCSL, JCL, whatever.  Whatever aD licensed their code as would not change.

If aD wanted to incorporate the code as part of an official distribution, they would probably ask him to license the code to them, and he could then license the code to aD, while simultaneously licensing the code under any other license of his choosing.