Merge branch 'master' into barry/fix-successful-numerical-factorization-after-failure/master

The maint patch for the given problem cannot merge cleanly into next due to changes
in the same code in m

Merge branch 'master' into barry/fix-successful-numerical-factorization-after-failure/master

The maint patch for the given problem cannot merge cleanly into next due to changes
in the same code in master (the introduction of MatFactorGetError()) therefor need
to merge in master and use the new construct before merging to next

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Merge branch 'master' into psanan/pc-telescope-nearnullspace

PCBDDC: added PCBDDCGraphRestoreCandidateIS

now get candidates have USE_POINTER for the faces and edges

Merge branch 'master' into mark/snes-ex56

* master: (93 commits)
Web: Added a tutorial
typo
rename X -> U
sowing: update to version that creates manpage URLs for 'enum' types/values
Increa

Merge branch 'master' into mark/snes-ex56

* master: (93 commits)
Web: Added a tutorial
typo
rename X -> U
sowing: update to version that creates manpage URLs for 'enum' types/values
Increase patchlevel to 3.7.3
move runex3_3 to NOTSINGLE [ partial backport 9ed0bd76d5c329eb91401ebabfbd851446214e20 ]
DMPlex: local coordinate vector should be a sequential vector
DM: Name coordinate vectors in subdomain and restrict hooks
tests: disable a couple of TS examples from single precision tests
reduce TS ex12_2 output
fix PetscFormatRealArray() to cast PetscReal in print statement to double so works for __float128 precision
Vec: enable Fortran interfaces for VecGetLocalVectorRead and VecRestoreLocalVectorRead
Bib: Added refs
PCShell: man page fixes
update handling of latex in example code to use https
fix typo in isltog comment
test: Avoid conversion of object <-> function pointer type [-Wpedantic]
fortran: enable interface for VecGetLocalVector(), VecRestoreLocalVector()
update citation for cmz2016
PCBDDC: silent compilation warnings from nightlybuilds
...

# Please enter a commit message to explain why this merge is necessary,
# especially if it merges an updated upstream into a topic branch.
#
# Lines starting with '#' will be ignored, and an empty message aborts
# the commit.

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Merge branch 'master' into stefano_zampini/feature-pcbddc-saddlepoint

Conflicts:
src/docs/website/documentation/changes/dev.html
src/ksp/ksp/examples/tutorials/ex59.c
src/ksp/pc/impls/bddc/bddc.c

Merge branch 'master' into stefano_zampini/feature-pcbddc-saddlepoint

Conflicts:
src/docs/website/documentation/changes/dev.html
src/ksp/ksp/examples/tutorials/ex59.c
src/ksp/pc/impls/bddc/bddc.c
src/ksp/pc/impls/bddc/bddcfetidp.c
src/ksp/pc/impls/bddc/bddcprivate.c
src/ksp/pc/impls/bddc/bddcschurs.c
src/mat/impls/is/matis.c
src/mat/impls/is/matis.h

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Merge branch 'stefano_zampini/fix-matis'

Conflicts:
src/mat/examples/tests/makefile

Merge branch 'maint'

Merge branch 'stefano_zampini/fix-getri-error-mkl' into maint

PCBDDC: silent compilation warnings from nightlybuilds

Merge branch 'maint'

PCBDDC: fix for getri error -2 with MKL

MKL seems to check the pointer (NULL) for the matrix even when lwork == -1

PCBDDC: do MatMultTranspose only if needed

Move PCBDDCSubsetNumbering to ISRenumber

This function is needed by MatGetLocalSubMatrix_IS

PCBDDC: fix eigenvalue problem for pointwise scaling

PCBDDC: fixes for complex builds

PCBDDC: use MatZeroRowsColumnsIS

PCBDDC: bugfix for benign_n > 1

the values were inserted in cs_AIB in column major format
the fix consists in changing the shape of cs_AIB

PCBDDC: use BLAS rank updates routines

PCBDDC: remove faster deluxe switch

PCBDDC: make change_primal_sub a member of sub_schurs

we need it during adaptive selection
sub_schurs->change and sub_schurs->chane_primal_sub are created when needed

PCBDDC: Added support for adaptive selection of constraints with pointwise scalings

PCBDDC: use PtAP for SeqDense from master

Merge branch 'master' into stefano_zampini/feature-pcbddc-saddlepoint

Conflicts:
src/ksp/pc/impls/bddc/bddc.c
src/ksp/pc/impls/bddc/bddcgraph.c
src/ksp/pc/impls/bddc/bddcprivate.c
src/ksp/pc/imp

Merge branch 'master' into stefano_zampini/feature-pcbddc-saddlepoint

Conflicts:
src/ksp/pc/impls/bddc/bddc.c
src/ksp/pc/impls/bddc/bddcgraph.c
src/ksp/pc/impls/bddc/bddcprivate.c
src/ksp/pc/impls/bddc/bddcscalingbasic.c
src/ksp/pc/impls/bddc/bddcschurs.c
src/mat/impls/is/matis.c

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PCBDDC: get size of R nodes after creating msolv_ctx->is_R

PCBDDC: added test for constraints with benign trick

A_RR matrix is not extracted unless it is needed (dbg_flag > 0 or reuse_solver not present)