Fix "Extra spaces in test harness rules" in checkbadSource

fix makefiles with tab char

Sys: add PetscSafePointerPlusOffset() to pacify UBSan

First batch of fixes

Merge branch 'jolivet/winter-housekeeping' into 'main'

Package updates

See merge request petsc/petsc!7143

Revert 41751ff936f2543999449f2cc826710c93affeac and e062e8b5c69bd8f5e0f7bcfa9dba51a49804e758

Merge branch 'barry/2023-12-26/fix-some-mansec' into 'main'

Fix the directory some code is in to get it listed in the proper MANSEC

See merge request petsc/petsc!7146

Merge remote-tracking branch 'origin/release'

Minor fixes to website material

Minor fix for manual page for PetscViewerHDF5Load

The next few commits fix the directory some code is in to get it listed in the proper MANSEC or SUBMANSEC

In this first commit it is PetscViewerHDF5ReadSizes and PetscViewerHDF5Load

Merge branch 'barry/2023-12-22/rm-libbase' into 'main'

LIBBASE is no longer used in make so remove it

See merge request petsc/petsc!7139

Merge remote-tracking branch 'origin/release'

Merge branch 'barry/2023-12-21/rm-unneeded-mansec' into 'main'

Remove MANSEC from makefiles it is not needed in, tutorials and tests

See merge request petsc/petsc!7137

LIBBASE is no longer used in make so remove it

Remove MANSEC from makefiles it is not needed in, tutorials and tests

Vec: add GEMV optimizations for VecMDot and friends for VecKokkos

Vec: add GEMV optimizations for VecMDot and friends for VecStandard

Remove KSPPIPEFGMRES from example with skip convergence test since very sensitive to happy ending

Appears to have a sweet spot of

Vec: add GEMV optimizations for VecMDot and friends for VecStandard

Remove KSPPIPEFGMRES from example with skip convergence test since very sensitive to happy ending

Appears to have a sweet spot of much better performance for smallish vectors then
matches unrolled code for large vectors

Sample results on Barry's Apple M2 Laptop (using Apple's BLAS)

./ex19 -da_refine 5 -pc_type none -log_view -ksp_gmres_preallocate -ksp_view

Vector length 37,636

VecMDot 1920 1.0 1.9707e-01 1.0 2.23e+09 1.0 0.0e+00 0.0e+00 0.0e+00 25 29 0 0 0 25 29 0 0 0 11291

-vec_mdot_use_gemv

VecMDot 1920 1.0 7.5098e-02 1.0 2.23e+09 1.0 0.0e+00 0.0e+00 0.0e+00 12 29 0 0 0 12 29 0 0 0 29693
VecMDot 1920 1.0 8.1523e-02 1.0 2.23e+09 1.0 0.0e+00 0.0e+00 0.0e+00 12 29 0 0 0 12 29 0 0 0 27353
VecMDot 1920 1.0 7.0889e-02 1.0 2.23e+09 1.0 0.0e+00 0.0e+00 0.0e+00 11 29 0 0 0 11 29 0 0 0 31456

-da_refine 6

Vector length 148,996

VecMDot 4340 1.0 1.7666e+00 1.0 2.00e+10 1.0 0.0e+00 0.0e+00 0.0e+00 20 29 0 0 0 20 29 0 0 0 11319

-vec_mdot_use_gemv

VecMDot 4422 1.0 1.3725e+00 1.0 2.04e+10 1.0 0.0e+00 0.0e+00 0.0e+00 15 29 0 0 0 15 29 0 0 0 14884
VecMDot 4422 1.0 1.4354e+00 1.0 2.04e+10 1.0 0.0e+00 0.0e+00 0.0e+00 16 29 0 0 0 16 29 0 0 0 14231

./ex19 -da_refine 7 -pc_type none -log_view -ksp_gmres_preallocate -ksp_view -vec_mdot_use_gemv -ksp_max_it 100 -snes_max_it 1

Vector length 592,900

VecMDot 100 1.0 1.5915e-01 1.0 1.72e+09 1.0 0.0e+00 0.0e+00 0.0e+00 14 27 0 0 0 14 27 0 0 0 10804

-vec_mdot_use_gemv

VecMDot 100 1.0 1.6854e-01 1.0 1.72e+09 1.0 0.0e+00 0.0e+00 0.0e+00 14 27 0 0 0 14 27 0 0 0 10230
VecMDot 100 1.0 1.5698e-01 1.0 1.72e+09 1.0 0.0e+00 0.0e+00 0.0e+00 14 27 0 0 0 14 27 0 0 0 10983

-da_refine 8

vector length 2,365,444

VecMDot 100 1.0 6.2499e-01 1.0 6.86e+09 1.0 0.0e+00 0.0e+00 0.0e+00 13 27 0 0 0 13 27 0 0 0 10976

-vec_mdot_use_gemv

VecMDot 100 1.0 6.8197e-01 1.0 6.88e+09 1.0 0.0e+00 0.0e+00 0.0e+00 14 27 0 0 0 14 27 0 0 0 10087

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SF: fix a typo as MPIX_STREAM is currently only enabled with CUDA in PETSc

Merge remote-tracking branch 'origin/release'

Merge branch 'barry/2023-12-14/rm-pcfieldsplit-issetblocksize/release' into 'release'

Fix the incorrect error checking for ISSetBlockSize() that triggers

See merge request petsc/petsc!7122

Fix the incorrect error checking for ISSetBlockSize() that triggers

[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[0]PETSC ERROR:

Fix the incorrect error checking for ISSetBlockSize() that triggers

[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[0]PETSC ERROR: Invalid argument
[0]PETSC ERROR: Block size 2 is incompatible with the indices: non consecutive indices 0 2
[0]PETSC ERROR: WARNING! There are unused option(s) set! Could be the program crashed before usage or a spelling mistake, etc!
[0]PETSC ERROR: [1]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------

Reported-by: 1807580692 <1807580692@qq.com>

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Merge remote-tracking branch 'origin/release'

PetscSectionCopy: allow skipping additional constrained dofs

PetscSection: support NULL indices for constrained indices