scalapack_2_1_0-gnu-openmpi2-hpc-2.1.0-8.21

- Change 'Requires:' to other HPC packages to %requires_eq to depend
  on the exact version. This should take care of HPC packages ignoring
  proper ABI versioning.

- Fix build for non-HPC packages: do not build BLACS headers for
  multiple flavors (boo#1178116).

- Add build support for gcc10 to HPC build (bsc#1174439).

- Add openmpi4 spport (provided by Alin M Elena)
- Replace -fallow-argument-mismatch by -std=legacy

- Add compiler flag -fallow-argument-mismatch to allow build with
  gcc10.

- Remove blacs HPC master packages: the libblacs has been removed
  (boo#1167949).

- Add a Provides: for the removed BLACS library package for HPC.
  libscalapack contains the BLACS ABI.

- Updated to v2.1.0 (jsc#SLE-11037)
  * New robust ScaLAPACK routine for computing the QR factorization with
    column pivoting by Zvonimir Bujanovic and Zlatko Drmac [Download Lawn 296]
  * MPI-3+ updates required by Open MPI 4
  * Improve accuracy of Frobenius norm by making intermediate column sums
  * miscellaneous minor bug fixes
  * Improve cmake shared library support
- Disable openmpi1 builds for SLE/Leap > 15.1.
- Enable openmpi3 builds for Leap and SLE > 15.1 (jsc#SLE-7773).
- Add support for gcc8 and gcc9 builds for HPC (jsc#SLE-7766,
  jsc#SLE-8604).
- For HPC no longer provide BLACS as a separate library.
- Remove:
  * scalapack-2.0.2-shared-blacs.patch
  * scalapack-2.0.2-shared-lib.patch
    Handled in spec file.

- Reflect renaming of openmpi packages to openmpi1 in Tumbleweed,
  fixes unresolvable packages.

- Use -ffat-lto-objects to provide a proper static library.