Fix CMake dynamic-arch fallback and remove unused BDSDC source copies

[moluopro]

• Correct Azure CI’s CMake list syntax.
• Fix CMake kernel selection after getarch fallback.
• Remove the unused misspelled BDSDC source copies.
• Parallelize the Azure macOS CMake build to avoid timeout.
• Backport QEMU’s clone_lock fix for RISC-V CI.

[moluopro]

I found and fixed another CI issue along the way.

[martin-frbg]

I have the feeling something more fundamental must have changed in the Azure OSX environment recently, as it used to work fine except for the occasional time out up to a week or so ago.

[martin-frbg]

I have the feeling something more fundamental must have changed in the Azure OSX environment recently, as it used to work fine except for the occasional time out up to a week or so ago.

replying to myself, it was probably the "apple-latest" image switching to a newer os environment, when the (objectively wrong) separation of the DYNAMIC_LIST with spaces used to work previously.

[moluopro]

I parallelized the macOS CMake build to avoid the Azure timeout and backported QEMU’s clone_lock fix for the C910V/RISC-V CI jobs.

[moluopro]

Finally all green, except for this pending check.

[martin-frbg]

Great, thanks. (Also nice to see that Jenkins is back already). The mis-spelled LAPACK sources must be from #5883 (LAPACK 1300), looks like finger trouble (and poor eyesight) when I copied the updated files from Reference-LAPACK.
I'll redo that PR.