Merge remote-tracking branch 'origin/maint'

Merge branch 'jose/maint/warnings-nolog' into 'maint'

Fix compile warning --with-log=0

See merge request petsc/petsc!2724

Fix compile warning --with-log=0

Merge branch 'knepley/feature-convest-ts' into 'master'

Knepley/feature convest ts

See merge request petsc/petsc!2190

TS+ConvEst: Made suggested improvements
- Renamed initialGuess to initialConditions
- Made refinement factor usable settable, but still only support 2 for
space

ConvEst: Generalize to use TS as well
- Now the solver is a PetscObject
- ts_convergence_estimate calculates the order for a TS method
- Added tsconvest.c
- Added initial guess and error methods that

ConvEst: Generalize to use TS as well
- Now the solver is a PetscObject
- ts_convergence_estimate calculates the order for a TS method
- Added tsconvest.c
- Added initial guess and error methods that can be overridden

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Merge branch 'jed/deprecate-dmgetdefaultsection' [PR #1969]

* jed/deprecate-dmgetdefaultsection:
DMGetDefaultSection et al: add PETSC_DEPRECATED_FUNCTION
These functions were deprecated in v3.9, but

Merge branch 'jed/deprecate-dmgetdefaultsection' [PR #1969]

* jed/deprecate-dmgetdefaultsection:
DMGetDefaultSection et al: add PETSC_DEPRECATED_FUNCTION
These functions were deprecated in v3.9, but no PETSC_DEPRECATED_FUNCTION was added at that time so many uses crept back into the source code. Here we mark it deprecated and fix all existing uses in PETSc.

DMGetLocalSection/DMSetLocalSection: add explicit names for DMGetSection/DMSetSection
These names are for symmetry with DMGetLocalVector() versus DMGetGlobalVector().

DMGetSection: replace all internal usage with DMGetLocalSection
Same for DMSetSection -> DMSetLocalSection. We retain the interface for DMGetSection/DMSetSection without deprecation warnings (for now).

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DMGetSection: replace all internal usage with DMGetLocalSection

Same for DMSetSection -> DMSetLocalSection. We retain the interface
for DMGetSection/DMSetSection without deprecation warnings (for n

DMGetSection: replace all internal usage with DMGetLocalSection

Same for DMSetSection -> DMSetLocalSection. We retain the interface
for DMGetSection/DMSetSection without deprecation warnings (for now).

Suggested-by: Barry Smith <bsmith@mcs.anl.gov>

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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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Merged in knepley/feature-dm-global-basis (pull request #1582)

Knepley/feature dm global basis

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

DM: Add ability to specify different global and local bases
- The global basis is for solving and applying BC
- The local basis is for assembly
- We transform bases in DMLocalToGlobal() and DMGlobalT

DM: Add ability to specify different global and local bases
- The global basis is for solving and applying BC
- The local basis is for assembly
- We transform bases in DMLocalToGlobal() and DMGlobalToLocal()
- Added a default implementation which does a rotation
- Transform functions used in BC and exact solutions, which we assume operate in the global basis
- Transform functions used in projection, which we assume operate in the global basis
- Transform Jacobian values to the global basis before insertion
- Transform coordinates to global basis when calling out projection, BC, and exact solution functions
- Copy transforms when forming a hierarchy
- Added many tiny LA things (Eigen is no longer a good dependency)

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Merged in knepley/feature-snes-check-split (pull request #1553)

Knepley/feature snes check split

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

Sys: Added simple routine for linear regression

Merged in knepley/feature-poiseuille-example (pull request #1446)

Knepley/feature poiseuille example

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

DM+DS: Exact solution functions should also carry contexts

Merge branch 'master' into wence/feature-patch-all-at-once

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

Merged petsc/petsc into master

Merged petsc/petsc into master

Merge branch 'knepley/feature-multiple-ds' [PR #1309]

Merge branch 'master' into knepley/feature-snes-patch

Merge branch 'master' into knepley/feature-multiple-ds

* master: (156 commits)
Added missing CHKERRQ()
KSP ex56: Added alt output file for ex56_2.
Revert "KSP ex56: Updated test output and dom

Merge branch 'master' into knepley/feature-multiple-ds

* master: (156 commits)
Added missing CHKERRQ()
KSP ex56: Added alt output file for ex56_2.
Revert "KSP ex56: Updated test output and domain size for test _2."
DMStag tutorial ex4: fix stencil errors
Hierarchical partitioner: added an alt output file
Add support for DMGetMatrix() with periodic boundary conditions in one dimension for DMDA.
Fixed incorrect 'ntext' argument in PetscOptionsEList call in SNES ex12.c
ISCreateSubIS: Initialize variables owner and lidx to avoid compiler warnings
metis: provide -download-metis-use-doubleprecision option
KSP ex56: Updated test output and domain size for test _2.
Hierarchical partitioner: add a bit documentation
ISCreateSubIS: Added checkers for parameters
Added a test for hierarchical partitioning vertex weights
Plex+Doc: Document options for DMPlexCreateBoxMesh()
Hierarchical partitioner supports vertex weights
Create an API ISCreateSubIS that extracts
Add an alt output file
Plex: Can now give bounds to DMPlexCreateBoxMesh() from options - Use -dm_plex_box_lower and dm_plex_box_upper
PCMG: These methods should be optional
PCMG: Make PCMGGet/SetLevels() proper member functions - Also need to compose them in GAMG
...

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

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