PC: ASM, Block Jacobi: when viewing, note local solver on rank 0 is shown

The KSPView() call shows the (sub-)KSP on rank 0, which should have the same
type, PC, parameters, etc., but will not be the

PC: ASM, Block Jacobi: when viewing, note local solver on rank 0 is shown

The KSPView() call shows the (sub-)KSP on rank 0, which should have the same
type, PC, parameters, etc., but will not be the identical solver,
as the size of the local subdomains and the entries of the local
submatrices will be different. For instance, the output only shows
the local Mat for rank 0, which might confuse a user into thinking that
the subdomains are all of the same size when they are not. Similarly,
a PC like LU would show different factorization details on different
ranks, even though the solver settings are the same.

Make the viewer output more precise by noting explicitly that is
displaying information for the rank 0 subsolver.

Update test output with the new string.

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refactored LMVM matrix names for Broyden-class methods

SNESQN harmonization with MATLMVM objects

Provide support for not setting PETSC_DIR when gnumake is being used; this will prevent some petsc-maint/petsc-users email threads

Commit-type: error-checking, testing-fix, feature, example
Thanks-t

Provide support for not setting PETSC_DIR when gnumake is being used; this will prevent some petsc-maint/petsc-users email threads

Commit-type: error-checking, testing-fix, feature, example
Thanks-to: Jed Brown <jed@jedbrown.org>
Thanks-to: Lisandro Dalcin <dalcinl@gmail.com>

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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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