Merge remote-tracking branch 'origin/dalcinl/fix-x11-errhandler'

PetscDrawCollectiveBegin(): Silence -Wclobbered warning with GCC 7.1.1

Maybe this is a false positive. However, the `longjmp` manpage provides
some comments about undefined behavior when using autom

PetscDrawCollectiveBegin(): Silence -Wclobbered warning with GCC 7.1.1

Maybe this is a false positive. However, the `longjmp` manpage provides
some comments about undefined behavior when using automatic storage local
variables without the `volatile` qualifier.

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Merge remote-tracking branch 'origin/stefano_zampini/fix-dmwswarm-includes-andothers'

PetscViewerDraw: API should be declared in petscviewer.h

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

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 'knepley/fix-plex-regression'

* knepley/fix-plex-regression:
SNES ex62: Solver jitter
SNES ex62: Newline at the end of output
TS ex11: It looks like Toby's fixes have slightly cha

Merge branch 'knepley/fix-plex-regression'

* knepley/fix-plex-regression:
SNES ex62: Solver jitter
SNES ex62: Newline at the end of output
TS ex11: It looks like Toby's fixes have slightly changed the shallow water example
TS ex32: Add output
Plex ex17: Updated to new point location interface
Plex: Must initialize interpolation elemMat since I only set the component diagonal
SNES ex12: Fixed tolerance in FAS runs
SNES ex12: Why did the ASM regression change?
SNES ex12: Corrected cheby options
SNES ex12: Added p4est output
SNES ex12: Updated output for changed GAMG settings
SNES ex12: Updated output for newline at end
Fortran: Missing if body in #define
Draw: Missing 'do' in incomprehensible #define

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Merge branch 'barry/housekeeping-2'

Draw: Missing 'do' in incomprehensible #define

Add test for -draw_ports options, remove unneeded multiple mallocs()

Reported-by: nightly tests gcov

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

Merged in dalcinl/fix-draw (pull request #435)

PetscDraw: Use 'int' for pixel coordinates

PetscDraw: Use 'int' for pixel coordinates

Merged in dalcinl/draw-null (pull request #434)

PetscDraw: Proper implementation of PETSC_DRAW_NULL

PetscDraw: Proper implementation of PETSC_DRAW_NULL

* Remove special casing of PETSC_DRAW_NULL in the draw interface
* Rework handling of PETSC_DRAW_NULL in Draw{Axis|LG|SP|BAR|HG}
* Some 'extern' -

PetscDraw: Proper implementation of PETSC_DRAW_NULL

* Remove special casing of PETSC_DRAW_NULL in the draw interface
* Rework handling of PETSC_DRAW_NULL in Draw{Axis|LG|SP|BAR|HG}
* Some 'extern' -> 'PETSC_INTERN' fixes
* Add missing error checking

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Merged in dalcinl/draw-image (pull request #430)

PetscDraw: New draw backend based on raster images

Merge branch 'master' into knepley/feature-plex-handle-func-failure

* master: (378 commits)
SNES ex5: Fix coordinate determination for empty subdomains
fixed petsc.bib entry
p4est: fix syntax

Merge branch 'master' into knepley/feature-plex-handle-func-failure

* master: (378 commits)
SNES ex5: Fix coordinate determination for empty subdomains
fixed petsc.bib entry
p4est: fix syntax error with error message
SNES ex5: Correct Jacobian handling on patches
SNES ex5: Stupid complex fixes
DMP4est: fix transfer of labels to parents
petsc4py: update to latest snapshot. Fixes da example breakage in petsc4py test suite
Plex: Correct setting of options on refined or coarsened meshes
Plex: Add info for grid hashing
Plex: Add logging in interpolator creation
Plex: Correct use of tabs in ASCII viewer
DM: Shorten long event name
Plex ex12: Create boundary label automatically at all levels of mesh hierarchy
Plex ex12: Change PetscViewerSetFormat --> PetscViewerPushFormat - Fix order of SetMode and SetFilename
Plex ex12: Change all functions to static
Since DMDA with periodic boundary conditions does support P0 interpolation remove checks that error out under those conditions
ascem-io.py and amanzi.py need to handle self.hdf5.include being None correctly
fix MPI Uni to recycle communicators so it won't run out like with the petsc4py tests also fix check for location of python shared library on mac to check all cases each time
Switch back to Sherry's version since she accepted by pull request
PetscDraw: Update help messages for -draw_save* options
...

Conflicts:
src/dm/impls/plex/plexfem.c

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PetscDraw: New draw backend based on raster images

Merged petsc/petsc into master

Merged in dalcinl/fix-draw-save (pull request #425)

PetscDraw: Refactor API for saving images/movies

PetscDraw: Refactor API for saving images/movies

* Now PetscDrawSetSave() handles saving images but not movies
* Add PetscDrawSetSaveMovie() to handle saving movies
* Add PetscDrawSaveMovie() to exp

PetscDraw: Refactor API for saving images/movies

* Now PetscDrawSetSave() handles saving images but not movies
* Add PetscDrawSetSaveMovie() to handle saving movies
* Add PetscDrawSaveMovie() to explicitly save the movie
* Enable save options for any draw subtype

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Merged in dalcinl/draw-save (pull request #420)

PetscDraw: Reimplement save image/movie

PetscDraw: Save PNG/GIF/JPG/PPM images

* Built-in support for writing PPM images.
* Support for writing PNG images (requires libpng)
* Support for writing GIF images (requires giflib)
* Support for

PetscDraw: Save PNG/GIF/JPG/PPM images

* Built-in support for writing PPM images.
* Support for writing PNG images (requires libpng)
* Support for writing GIF images (requires giflib)
* Support for writing JPG images (requires libjpeg)
* Get rid of AfterImage (dated, not std, problematic to build)
* Move most of the saving business to PetscDraw interface
* Add a draw->ops->getimage() slot to implement in draw subtypes
* Allow users choose the movie extension (defaults to .m4v)
* Fix movie generation with ffmpeg for non-animated GIF input

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Merge remote-tracking branch 'origin/knepley/fix-plex-hdf5-label' into tisaac/dmforest

* origin/knepley/fix-plex-hdf5-label: (50 commits)
Plex: Fixed HDF5 output for DMLabel - The ISAllGather() wa

Merge remote-tracking branch 'origin/knepley/fix-plex-hdf5-label' into tisaac/dmforest

* origin/knepley/fix-plex-hdf5-label: (50 commits)
Plex: Fixed HDF5 output for DMLabel - The ISAllGather() was being called with an IS that had COMM_SELF - Also, we needed to protect for empty index arrays
superlu_dist: install target should first make sure prefix/[include,lib] dirs exist - similar to superlu
dm: add DMRemoveLabel() fortran interface
nightlybuilds: allocate more time to run arch-linux-xsdk-dbg build...
Remove superfluous information messages
Cannot have rank 1 print before parallel print since it may end up before or after the print from process 0. There change to have rank 0 print the sequential matrix
Bib: Added ref
Plex: Update ex12_5 with correct level-2 overlap
DMLabel: Add missing cleanup for DMLabelGather()
mpiuni: check for "long_long" before checking for "__int64" [as "typedef __int64" gives error with icc] Note: cannot use 'int64_t' as 'typedef unsigned int64_t foo' gives eror with icc
Add filter for solaris linker scope warning to master since that is used in nightly tests of next
Previous commit did not correctly handle downloading from --with-packages-dir
Use special error code of 10 for output list of needed downloaded package tarballs otherwise the outer configure.py script converts the error code to an error message we do not want.
Have ./configure return a nonzero exit code when --with-packages-dir detects missing packages so that calling scripts know this is occurred simplify some code
Completed support for --with-packages-dir=directory that allows --download-xxx features to be cleanly used behind firewalls etc also updated to docs to indicate this new feature
Adding supporting for --download-xxx to reported needed downloads when off line or behind a firewall and using local copies when available with the --with-packages-dir=directory option
Fix typos in linesearch impls:armijo, morethuente, owarmijo.
PetscDraw: Explicitly save draw in KSP/SNES/TS monitors
PetscViewerDraw: Propagate prefix from viewer to draw contexts
PetscDraw: Explicitly save draw in {Vec|Mat|DMDA}View() routines
...

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