[phobos] Tango and Phobos source code cross pollination

[Walter Bright]

The crux of the problem is that Tango has a license (BSD) that cannot be 
relicensed to the Boost license without the explicit permission of all 
the authors of any code to be transferred.

In order to avoid even the appearance of impropriety, there won't be any 
submissions to Phobos that are based on Tango code, even simply Tango 
interfaces, without the explicit permission of all authors of that code.

One of the major authors of the Tango time module, John Chapman, cannot 
be located so until he is and agrees the proposed Phobos time module 
cannot be accepted.

I have asked the Tango team to consider adopting the Boost license at 
least for new modules. I don't think this will cause any significant 
problems, as neither the Boost nor the BSD licenses are viral.

I think we can all agree that it doesn't do D, Phobos, or Tango any good 
at all to have these licensing rifts.

And as always, I extend to the Tango team permission to create derived 
works of and relicense to BSD for Tango any of the code I have written 
for Phobos.