[boost] Legal problem with Stackoverflow contribution under the "Creative Commons Attribution Share Alike 3.0" license

Subject: [boost] Legal problem with Stackoverflow contribution under the "Creative Commons Attribution Share Alike 3.0" license
From: Dominique CHABAUD (dchabaud63_at_[hidden])
Date: 2018-02-19 15:34:31

 Hi all,

In Boost 1.62.0 we saw in the following header file :
boost/thread/win32/thread_primitives.hpp
that the function inline ticks_type __stdcall GetTickCount64emulation()
is a contribution coming from https://stackoverflow.com
/questions/8211820/userland-interrupt-timer-access-such-
as-via-kequeryinterrupttime-or-similar

Stackoverflow re-lisensing to MIT is told to be in place starting Feb 1,
2016 and only for new contributions. But the StackOverflow contribution
that has been borrowed in Boost is Nov 23, 2011 and contributions prior to
Feb1, 2016 are under the "Creative Commons Attribution Share Alike 3.0"
license which is not permissive.

This causes legal problem.
Hope somebody can fix this.

Thanks
Dominique