Make sundials more flexible depending on the Linux version

[Closius]

Would be nice to make dependency of sundials lib somehow depended on the Linux version.

I tested .fmu (in continuous mode) on Alma8 with GLIBC 2.28 (check ldd --version) but fmpy 0.3.26 uses sundials which was built on a newer Linux and requires GLIBC 2.29

/lib64/libm.so.6: version `GLIBC_2.29' not found (required by blabla/fmpy/sundials/x86_64-linux/sundials_nvecserial.so)

So I downloaded sundials which is compatible for Alma8 and substitute it in fmpy folder (+ openblas-openmp) and it start working. But it is a monkey patch. So better to make it somehow more flexible.