Merge branch 'rmills/feature-matgetcolumnreductions' into 'main'

Add MatGetColumnReductions()

See merge request petsc/petsc!4272

Add MatGetColumnSums() and MatGetColumnMeans() (and real and imaginary part variants)

MatGetColumnReductions() now takes a PetscInt so ReductionType or NormType members can be passed.
ReductionType

Add MatGetColumnSums() and MatGetColumnMeans() (and real and imaginary part variants)

MatGetColumnReductions() now takes a PetscInt so ReductionType or NormType members can be passed.
ReductionType no longer duplicates entries of NormType.
Replace MatGetColumnNorms_SeqBAIJ() with MatGetColumnReductions_SeqBAIJ()

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Added MatGetColumnReductions(). MatGetColumnNorms() is now a wrapper that calls MatGetColumnReductions().

Made changes requested by Richard.

Merge branch 'jed/promote-examples-tests-tutorials' [petsc/petsc!2610]

* jed/promote-examples-tests-tutorials:
Promote examples/{tests,tutorials}/ to {tests,tutorials}/

Promote examples/{tests,tutorials}/ to {tests,tutorials}/

This shortens paths and improves consistency between test target names
and paths to the source and output files. Most of the work was
compl

Promote examples/{tests,tutorials}/ to {tests,tutorials}/

This shortens paths and improves consistency between test target names
and paths to the source and output files. Most of the work was
completed by this script, followed by mild cleanup of nonconforming
cases.

for makefile in `git ls-files 'src/*makefile'`; do
if rg -q 'DIRS.*\bexamples\b' $makefile; then
base=$(dirname $makefile)
dirs=$(cd $base/examples && ls -d tests tutorials 2>/dev/null | xargs echo)
perl -pi -e "s#^(DIRS.*)\bexamples\b#\1${dirs}#" $makefile
git rm $base/examples/makefile
for t in $dirs; do
git mv $base/examples/$t $base/
perl -pi -e "s#^(LOCDIR[[:space:]]*=).*#\1 $base/$t/#" $base/$t
done
fi
done

git grep -l -E -z 'examples/(tutorials|tests)' | xargs -0 perl -pi -e 's#examples/(tutorials|tests)#\1#g'
git checkout @ \
src/docs/website/documentation/changes/ \
src/benchmarks/results/

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