SF: minor revision avoiding useless log events

Config: get rid of PETSC_HAVE_OMPI_MAJOR_VERSION and include it in petscpkg_version.h

Merge remote-tracking branch 'origin/release'

SF: add a workaround for an ompi-5.0.x bug not allowing null arrays when size is zero

Note the bug is fixed at https://github.com/open-mpi/ompi/pull/12614

Merge remote-tracking branch 'origin/release'

SF: need to sync the stream before MPI send even when there is nothing to send but has something to receive

There might be pending gpu operations on the receive buffer. Without synchronization, say

SF: need to sync the stream before MPI send even when there is nothing to send but has something to receive

There might be pending gpu operations on the receive buffer. Without synchronization, say we proceed to MPI_Waitall(). MPI might stage on host and do a H2D copy on an internal stream on the receive side. Previous gpu operations COULD happen after the H2D copy, causing a write-after-write reorder violation!

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cupm: fix visibility to build without warnings

Thanks-to: Lawrence Mitchell

Fix for defined but unused variables under certain configurations

Typos

PetscSF: implement PetscSFCreateStridedSF

CI: update to clang-format-18

Remove some unneeded parentheses