AST-1620 Fix __DP3_from_pip__ in binary wheel
The DP3 binary wheel does not fully work since it has a serial OpenBLAS library. The internal BLAS check therefore fails when running the bundled __DP3_from_pip__
binary.
Explicity specifying a parallel OpenBLAS library fixes the issue.
A downgrade of patchelf was also necessary, as recent versions generate corrupted __DP3_from_pip__
binaries.
Edited by Maik Nijhuis