[Beignet] Copyright problem in backend/src/ir/structural_analysis.*

[Rebecca N. Palmer]

Since commit d47f6dd8f308323919d2acb0c1b9f562c084866c, beignet has 
included backend/src/ir/structural_analysis.* based on gpuocelot.

gpuocelot's license was then "BSD plus you must obey US export 
restrictions (even if you are not in the US)".  This is non-free by 
Debian's definition[1,2], and means that beignet as a whole is no longer 
LGPL.

gpuocelot has since added a top-level LICENSE notice without the 
problematic clause[3], but also still has ocelot/COPYING with it[4], 
making its actual license unclear; the obvious next step would be to ask 
them for clarification.

This is currently being discussed in Debian at [5].

[1] https://lists.debian.org/debian-legal/2015/04/msg00030.html
[2] https://people.debian.org/~bap/dfsg-faq part 12p
[3] https://github.com/gtcasl/gpuocelot/blob/master/LICENSE
[4] https://github.com/gtcasl/gpuocelot/blob/master/ocelot/COPYING
[5] 
http://lists.alioth.debian.org/pipermail/pkg-opencl-devel/Week-of-Mon-20150511/date.html