14:56 zeising 

Switch mesa and related ports to llvm80

Switch mesa over to use llvm80 instead of llvm60.  Make it use the
global LLVM_DEFAULT instead of deciding for ourself which llvm version
to use. [1]

Fix build of lang/beginet [1]

Add patch from upstream to fix build of devel/libclc.  The patch is taken
from the git mirror of devel/libclc rather than the SVN repo, for
convenience.

Add a patch from mesa upstream preventing certain error messages when using
amdgpu [2]

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