Merge branch 'balay/misc-fixes' into 'main'

petsc4py: revert python3 requirement - as python2 is needed for docs/tarball generation

See merge request petsc/petsc!5620

makefile: fix typo - petsckdir.mk -> petscdir.mk

Merge branch 'barry/2022-05-03/cleanup-makefiles' into 'main'

remove unneeded stuff from makefiles

See merge request petsc/petsc!5211

Add -include */petscdir.mk to makefile that lacked it

for i in `git ls-files | grep makefile | xargs grep -L petscdir.mk`; do
echo $i ;
str=`echo $i |sed -e 's?[-a-zA-Z0-9]*/?../?g' -e 's?makef

Add -include */petscdir.mk to makefile that lacked it

for i in `git ls-files | grep makefile | xargs grep -L petscdir.mk`; do
echo $i ;
str=`echo $i |sed -e 's?[-a-zA-Z0-9]*/?../?g' -e 's?makefile?petsckdir.mk?g'` ;
cp $i tmp
echo "-include $str" > $i
cat tmp >> $i
done

Commit-type: makefile, housekeeping
/spend 15m

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Merge commit 'd47bf9aaf1e5266cc3f0ff499f934c85788965a9' into jed/fix-matcreatempibaij/maint

Obtain changed (v3.5) handling of MatMPIBAIJSetPreallocationCSR to match
documentation.

Merge branch 'master' into jed/ts-eimex

Sync to include Git conversion, PETSC_EXTERN, and minor API changes.

Conflicts:
src/ts/interface/tsregall.c

Merge branch 'master' into tautges/dmmoab

Obtain config/BuildSystem as subtree.

Merge branch 'maint' (config/BuildSystem subtree)

Merge branch 'maint-3.2' into maint (BuildSystem subtree)

Add 'config/BuildSystem/' from commit '94fb7d1092a023a10eba9cdace78f25709a190fd'

git-subtree-dir: config/BuildSystem
git-subtree-mainline: d24caab14e29d890d97b19b2c7aadd37e4d931ee
git-subtree-split:

Add 'config/BuildSystem/' from commit '94fb7d1092a023a10eba9cdace78f25709a190fd'

git-subtree-dir: config/BuildSystem
git-subtree-mainline: d24caab14e29d890d97b19b2c7aadd37e4d931ee
git-subtree-split: 94fb7d1092a023a10eba9cdace78f25709a190fd

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