fixed non-PETSc standard usage of const in GAMG code

There is no verbose in PETSc!

Removed the verbose mechanism from GAMG code and used PetscInfo() for reports instead.

added infrastructure for PCView() to provide info on GAMG options and sub GAMG options, such as AGG

removed some unneeded rank and size from gamg code

PetscLogEvent routines do not need to be protected with a #if defined(PETSC_USE_LOG)

unify spelling/abbreviation of some internal GAMG functions and the logging variables and names printed in -log_summary

Please always use the same abbreviations/capitalizations/spellings for related

unify spelling/abbreviation of some internal GAMG functions and the logging variables and names printed in -log_summary

Please always use the same abbreviations/capitalizations/spellings for related things. It is difficult for anyone else to understand/modify code if there are random small differences

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Merge branch 'master' into stefano_zampini/pcbddc-adaptive-selection

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

Merge branch 'master' into barry/saws-options-merge-master

Totally confusing manual merge, could be wrong

Conflicts:
include/petscoptions.h
src/dm/impls/da/dacreate.c
src/sys/objects/aoptions.c

Merge branch 'master' into barry/saws-options-merge-master

Totally confusing manual merge, could be wrong

Conflicts:
include/petscoptions.h
src/dm/impls/da/dacreate.c
src/sys/objects/aoptions.c
src/sys/threadcomm/interface/threadcomm.c

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Merge branch 'tisaac/fix-gamg-square-graph'

GAMG: Allow different behavior for the graph construction of the finest-level operator in a consistent way that allows for the preconditioner to be reused.

Merge branch 'master' into pr252/dmay/PetscViewerBinarySkipHeaderVecViewLoad
Manual merge of makefile

Conflicts:
src/sys/classes/viewer/examples/tutorials/makefile

GAMG: keep track of coarsening level

If we want different behavior when coarsening from the finest level,
then we have to keep track of it. We can't assume that only the first
call to PCGAMGCoarsen

GAMG: keep track of coarsening level

If we want different behavior when coarsening from the finest level,
then we have to keep track of it. We can't assume that only the first
call to PCGAMGCoarsen works on the fine graph if we set up the
preconditioner multiple times.

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Merge branch 'barry/experiment'

Merge branch 'tisaac/feature-gamg-extensible' into barry/experiment

Conflicts:
src/ksp/pc/impls/gamg/gamg.h

GAMG: fix inclusion of source headers in public header

The source headers that GAMG uses to access matrix types have been moved
back to gamg.h

Move MG and GAMG implementation headers to petsc-private

I want to be able to register GAMG plugins. I considered a few options:

a) Move the implementation headers to petsc-private so they can be

Move MG and GAMG implementation headers to petsc-private

I want to be able to register GAMG plugins. I considered a few options:

a) Move the implementation headers to petsc-private so they can be
installed

b) Make Get/Set methods for all of the GAMGOps: graph, coarsen,
optprol, etc.

c) Add a PCGAMGGet/SetOperation like MatShellGet/SetOperation for each
of these operations.

The easiest was (a), and the GAMG methods are so context-specific I'm
not sure who would benefit from their being part of the public petsc
interface. If GAMG get's refactored to where the operations are easier
to understand on their own, then maybe (b) or (c) would be a better
option.

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simplify option object names

Merge branch 'knepley/feature-dm-sf-local-copy' into knepley/feature-ts-fem+fvm-example

* knepley/feature-dm-sf-local-copy:
DM: Added support for INSERT_VALUES in DMLocalToGlobal() with an SF, whe

Merge branch 'knepley/feature-dm-sf-local-copy' into knepley/feature-ts-fem+fvm-example

* knepley/feature-dm-sf-local-copy:
DM: Added support for INSERT_VALUES in DMLocalToGlobal() with an SF, where it just does a local copy
fortranstubs: do not process files in .git
setup.py: Fix install of package's __init__.py file
f2cblaslapack: use correct location to copy tmpmakefile for subsequent self.installNeeded() to work.
doc: exclude tutorials/HandsOnExercise.html from 'docsetdate'
setup.py: Better handling of $PETSC_CONFIGURE_OPTIONS
setup.py: Simplify code to support just pip install
Don't install $PETSC_ARCH/lib/.DIR
Move install.py and gmakegen.py from lib/petsc-conf/ to config/
updated gamg tests
fixed squaring graph on all levels in GAMG
fixed gamg coarse grid to be general

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Merge branch 'mark/gamg-crs-ksp2'

fixed squaring graph on all levels in GAMG

moved PetscOptionsObject from global variable to local variable in functions

Merge branch 'barry/remove-unneeded-paren-petscmalloc'

Conflicts:
src/mat/impls/baij/seq/baij.c

convert some PetscMalloc() to PetscMalloc1()
remove unneeded () in first argument to PetscMalloc/Calloc1()
fixes for MATLAB examples

Merge branch 'barry/fix-options-default'

Conflicts:
src/ksp/ksp/examples/tutorials/ex52.c

update use of PetscOptionsBool() to not rely on default setting automatically

Merge branch 'tisaac/feature-fe-geom-dim' into tisaac/plex-flexible-projection

Use the new PetscFECellGeom

Conflicts:
include/petscdmplex.h
include/petscfe.h
src/dm/impls/plex/plexfem.c