Bug#1122961: llvmlite: Please upload new release 0.46.0

[Stuart Prescott]

As a follow-up, porting to llvm-21 didn't look too hard...

Some AI slop at https://github.com/numba/llvmlite/issues/1328 (much of 
which makes absolutely no sense at all) for inspiration and some 
hopefully better work at:

https://salsa.debian.org/stuart/llvmlite/-/commits/tmp/llvm-21-support

(I'm not convinced about the changes to orcjit.cpp; the tweak to cmake 
needs to be a little more general)

please let me know if merging this with the other work is a good idea.

thanks
Stuart

-- 
Stuart Prescott   http://www.nanonanonano.net/ stuart at nanonanonano.net
Debian Developer  http://www.debian.org/       stuart at debian.org
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