applied attribute format fixes to mat headers

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 'jacobf/2021-03-26/clang-static-linter' into 'main'

Feature: libClang PETSc Macro Static Analyzer

See merge request petsc/petsc!3773

Linter using libClang that checks PetscValidHeaderSpecifcType, PetscValidHeaderSpecific, PetscValidHeader, PetscValid[XXX]Pointer, PetscValidType, PetscCheckSameComm, PetscValidLogicalCollectiveXXX f

Linter using libClang that checks PetscValidHeaderSpecifcType, PetscValidHeaderSpecific, PetscValidHeader, PetscValid[XXX]Pointer, PetscValidType, PetscCheckSameComm, PetscValidLogicalCollectiveXXX for validity. Automatically generates diff files for problems with a known solution.

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Merge branch 'jczhang/clean-up-vecscatter' into 'master'

typedef PetscSF VecScatter

See merge request petsc/petsc!3365

Clean up vecscatter and define it as PetscSF

Merge branch 'dalcinl/fix-null' into 'master'

Fix 0 -> NULL for pointers

See merge request petsc/petsc!3086

Mat: Replace 0 -> NULL for pointers

Merged in barry/update-collective-on (pull request #1744)

Update the use of Collective on in the manual pages to reflect the new style

Update the use of Collective on in the manual pages to reflect the new style

Commit-type: style-fix, documentation
Thanks-to: Patrick Sanan <patrick.sanan@gmail.com>

Merged in psanan/man-pages-remove-keywords (pull request #1717)

Man pages: Remove .keywords fields

Approved-by: BarryFSmith <bsmith@mcs.anl.gov>

Man pages: remove .keywords: fields

This field is recognized by doctext from Sowing (http://wgropp.cs.illinois.edu/projects/software/sowing/doctext/node20.htm#Node20),
but it doesn't seem to be unif

Man pages: remove .keywords: fields

This field is recognized by doctext from Sowing (http://wgropp.cs.illinois.edu/projects/software/sowing/doctext/node20.htm#Node20),
but it doesn't seem to be uniformly used or maintained.

Thus, remove all .keywords: fields, and a following blank line, if present.

This is accomplished with GNU sed (gsed on OS X), with the following commands.
*Warning* that this type of command can corrupt a .git directory,
so be cautious in reusing or modifying these commands. They first look
for and delete matching lines with a following line consisting of only whitespace,
and then delete any remaining matching lines.

find src/ -type f -exec gsed -i '/keywords:/ {N; /\n\s*$/d}' {} +
find src/ -type f -exec gsed -i '/keywords:/d' {} +
find include/ -type f -exec gsed -i '/keywords:/ {N; /\n\s*$/d}' {} +
find include/ -type f -exec gsed -i '/keywords:/d' {} +

Hints on the sed command obtained from: https://unix.stackexchange.com/questions/100754/how-to-delete-a-specific-line-and-the-following-blank-line-using-gnu-sed

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Merge branch 'master' of bitbucket.org:petsc/petsc

Merge remote-tracking branch 'origin/jczhang/fix-vecscattercreate-api'

Revert the function name where it is referenced

Merge branch 'master' into jpusztay/feature-swarm-symplectic-example

Merge branch 'master' into jpustay/feature-swarm-example

Merged petsc/petsc into master

Merge branch 'master' into arcowie-rem/feature-error-logging

* master: (393 commits)
Bib: Update reference
Mat: Doc fix
Bib: Updated ref
PetscDS: Doc fixes
PC+LU: Do not try to refactor an

Merge branch 'master' into arcowie-rem/feature-error-logging

* master: (393 commits)
Bib: Update reference
Mat: Doc fix
Bib: Updated ref
PetscDS: Doc fixes
PC+LU: Do not try to refactor an already factored matrix
Mat: Small fix for checking and docs
Mat: Added MatSetFactorType() - Needed it when making a shell matrix look factored
PetscDS: Added PetscDSUpdateBoundary() - Lets the user change the boundary condition
single precision produces different convergence history
p4est: has a dependency on zlib - so handle it correctly
Add -mat_mffd_complex to use the Lyness complex number trick to compute J_u * v instead of differencing.
Replace VecWAXPY by VecAXPY if needed
Revert "Replace VecWAXPY by VecAXPY if needed"
Replace VecWAXPY by VecAXPY if needed
MatHermitianTransposeGetMat and MatCreateVecs
ex19: Updated test filter to avoid false positives.
DM: Improved Global-To-Natural docs Suggested-by: Josh L <ysjosh.lo@gmail.com>
Do not build shared openblas when doing static build
Upgrade OpenBLAS to 0.3.3
test: add alt output file for changes in OSX-10.14 and Xcode-10.0 [perhaps related to ML]
...

Conflicts:
src/vec/is/utils/vsectionis.c

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Merged petsc/petsc into master

Merged petsc/petsc into master

Merge branch 'master' into knepley/feature-dm-nearnullspace

* master: (219 commits)
petsc4py: update with VecScatter API changes
remove duplicate code
petsc4py: update to version 3.10.0
fixe

Merge branch 'master' into knepley/feature-dm-nearnullspace

* master: (219 commits)
petsc4py: update with VecScatter API changes
remove duplicate code
petsc4py: update to version 3.10.0
fixed typos in documentation
fixed typos in documentation
Fix some remaining Register()s to call InitializePackage()
Remove memory leaks of XXXRegister() is called but XXX object is never used
Add to PCTFS manual page that it does not work for complex numbers
Stray , in manual page that should be .
Only register MPI3 VecScatter if they are built
clarification of KSPSetComputeInitialGuess()
Add missing makefiles for VecScatter implementations
Changed VecScatterCreate() to take a communicator and return scatter as other first class PETSc objects do. Changed old VecScatterCreate() to VecScatterCreateWithData()
Added VecScatterSetUp() and converted implementations to use it to compute scatter information
Pull "MPI1" and "MPI3" specific code out of common VecScatter impls code This allows future implementations to use the common code also without changing the common code
Seperate VecScatter implementation code into three subdirectories seq, mpi1, and mpi3
doc: fix author list in manual wrt 6402aee
doc: fix LOCDIR wrt broken URL from MatHYPRESetPreallocation.html
ifort: ifx compile error with --with-mpi=0
changes/310.html: merged two TAO sections
...

Conflicts:
src/dm/interface/dm.c

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Merge branch 'master' into knepley/feature-ksp-ex10-transpose

* master: (219 commits)
petsc4py: update with VecScatter API changes
remove duplicate code
petsc4py: update to version 3.10.0
fi

Merge branch 'master' into knepley/feature-ksp-ex10-transpose

* master: (219 commits)
petsc4py: update with VecScatter API changes
remove duplicate code
petsc4py: update to version 3.10.0
fixed typos in documentation
fixed typos in documentation
Fix some remaining Register()s to call InitializePackage()
Remove memory leaks of XXXRegister() is called but XXX object is never used
Add to PCTFS manual page that it does not work for complex numbers
Stray , in manual page that should be .
Only register MPI3 VecScatter if they are built
clarification of KSPSetComputeInitialGuess()
Add missing makefiles for VecScatter implementations
Changed VecScatterCreate() to take a communicator and return scatter as other first class PETSc objects do. Changed old VecScatterCreate() to VecScatterCreateWithData()
Added VecScatterSetUp() and converted implementations to use it to compute scatter information
Pull "MPI1" and "MPI3" specific code out of common VecScatter impls code This allows future implementations to use the common code also without changing the common code
Seperate VecScatter implementation code into three subdirectories seq, mpi1, and mpi3
doc: fix author list in manual wrt 6402aee
doc: fix LOCDIR wrt broken URL from MatHYPRESetPreallocation.html
ifort: ifx compile error with --with-mpi=0
changes/310.html: merged two TAO sections
...

Conflicts:
src/ksp/ksp/interface/itfunc.c

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Merge branch 'barry/refactor-vecscatter-2'