Merge branch 'barry/2020-08-19/better-pcfailedreason-handling' into 'master'

Slightly improved the handling of PCFailedReason on multiple ranks

See merge request petsc/petsc!3084

Slightly improved the handling of PCFailedReason on multiple ranks

pc->failedreasonrank now contains the failed reason from the current rank
pc->failedreason continues the unified common value colle

Slightly improved the handling of PCFailedReason on multiple ranks

pc->failedreasonrank now contains the failed reason from the current rank
pc->failedreason continues the unified common value collected in KSPCheckNorm/Dot
This parallel code can check the common value and be sure to do the same action on each process
Also printed message now provide the accurate value instead of the value on rank 0

Changed KSPReasonView() and KSPReasonViewFromOptions() to KSPCOnvergeReasonView() and KSPConvergedReasonViewFromOptions()

Added the PetscViewerFormat argument to the public KSPReasonViewFromOptions() and removed the private function

Removed some off the PCFailedReaon processing code from KSPSolve_PREONLY since buggily assumed the same reason all ranks

The error message on KSP failure now also prints the PCFailedReason if appropriate

Needed to add a new alt file

Reported-by: Yu, Xiangyu <Xiangyu.Yu@bp.com>

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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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