File _multibuild of Package openblas.32521

<multibuild>
  <package>serial</package>
  <package>pthreads</package>
  <package>openmp</package>
  <package>gnu-hpc</package>
  <package>gnu-hpc-pthreads</package>
  <package>gnu12-hpc</package>
  <package>gnu12-hpc-pthreads</package>
</multibuild>