[flang] [llvm] [flang] add QSORT extension intrinsic to the runtime (PR #132033)

[via llvm-commits]

jeanPerier wrote:

For the record, here is another link to documentation for the 3F library https://docs.nvidia.com/hpc-sdk/pgi-compilers/20.4/x86/fortran-ref-guide/index.htm#fort-3f-routines

https://github.com/llvm/llvm-project/pull/132033