portaudio license

[George Danchev]

Hello, 

Reviewing again #354899 it seems to me that Junichi is right. To quote the 
license again: 

===
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

Any person wishing to distribute modifications to the Software is
requested to send the modifications to the original developer so that
they can be incorporated into the canonical version.
===

Contributing back to upstream is a request, but it is also a _condition_ (as 
spelled above) and this is mandatory and unavoidable condition to use, copy, 
modify, and so on ... that software. These conditions are unavoidable and if 
the copyright holders are so scrupulous they should already reconsider their 
license and removed any ambiguity found it or use a already proven free 
software license. I'm personally afraid to touch such "free" bits which 
suddenly become non-free at some future point and/or exotic jurisdiction.

-- 
pub 4096R/0E4BD0AB 2003-03-18 <people.fccf.net/danchev/key pgp.mit.edu>
fingerprint 1AE7 7C66 0A26 5BFF DF22 5D55 1C57 0C89 0E4B D0AB