chkerr and friends wrapped

Merge branch 'balay/fix-misleading-indentation' into 'main'

g++11: fix -Werror=misleading-indentation

See merge request petsc/petsc!4298

g++11: fix -Werror=misleading-indentation

Merge branch 'barry/2021-05-16/fix-double-lines' into 'main'

Fix typos in source

See merge request petsc/petsc!3984

Remove all double blank lines from source

Commit-type: petsc-style
/2h

Merge branch 'haplav/improve-options-monitor' into 'master'

improve options monitor

See merge request petsc/petsc!2912

-options_monitor and -options_monitor_cancel have immediate effect.

* No need to call for PetscOptionsSetFromOptions
* PetscOptionsMonitorDefault now uses plain PetscPrintf if NULL context (viewer)

-options_monitor and -options_monitor_cancel have immediate effect.

* No need to call for PetscOptionsSetFromOptions
* PetscOptionsMonitorDefault now uses plain PetscPrintf if NULL context (viewer) is passed
* so we can avoid creating a viewer early in PetscInitialize
* -options_monitor_cancel cancels just hard-wired monitors
* Remove PetscOptionsSetFromOptions
* Remove PetscOptionsMonitorCancel
* Introduce concept of options with absolute precedence
* -options_monitor,-options_monitor_cancel,-h,-help,-skip_petscrc,-options_file_yaml,-options_string_yaml
* PetscOptionsInsert: improve -skip_petscrc handling
* Call PetscOptionsInsertArgs just once per PetscOptionsInsert
* Improve related manpages

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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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