DMPlex: cache FVM data

Plex+SNES+TS: Pass time and shift down into residual and Jacobian kernels, and the boundary kernels
- Added time into ComputeRHS/IFunction

TS: Add interface API for 2nd order systems

TS: Add typedef TSForcingFunction

Merge branch 'mlange/fix-plex-multi-level-overlap'

* mlange/fix-plex-multi-level-overlap: (259 commits)
Plex: Update ex12_5 with correct level-2 overlap
DMLabel: Add missing cleanup for DMLabelG

Merge branch 'mlange/fix-plex-multi-level-overlap'

* mlange/fix-plex-multi-level-overlap: (259 commits)
Plex: Update ex12_5 with correct level-2 overlap
DMLabel: Add missing cleanup for DMLabelGather()
Plex ex12: Fixed variable initialization and some output
Plex ex11: Added error checking
Plex ex14: Now boundary label does not have cells
Plex ex1: Now boundary label does not have cells
Plex ex1: Fix for VTK format
added some debugging code, getting ready to branch
added some print statements, should be an -info...
smome cleaning up
restructured ex11 to allow for problem specific BCs
DMPlex: Update test ex12_5 with correct level-2 overlap
DMPlex: Use global processSF in DMPlexPartitionInvert
DMPlex: Add remote leaf contributions to roots in DMLabelPropagate
DMPlex: Add DMLabelGather to migrate label values from leafs to roots
DMPlex: Refactor DMLabelDistribute to separate point stratum distribution
DMPlex: Add propagation of remote point donations for multi-level overlap
DMPlex: Fix DMLabelDistribute for all-to-all migrations
Plex: make extern exactly match prototype: semantic match is not enough.
DMP4est: typo fix
...

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PetscDraw: Explicitly save draw in KSP/SNES/TS monitors

DM+SNES/TS: Fixed caching of Plex

Plex+TS: Finally fixed BC function

Plex+TS: Condensing to one BC function

Merge branch 'tisaac/dmforest' of bitbucket.org:petsc/petsc into tisaac/dmforest

# By Toby Isaac (6) and Mark Adams (2)
# Via Mark Adams
* 'tisaac/dmforest' of bitbucket.org:petsc/petsc:
removed d

Merge branch 'tisaac/dmforest' of bitbucket.org:petsc/petsc into tisaac/dmforest

# By Toby Isaac (6) and Mark Adams (2)
# Via Mark Adams
* 'tisaac/dmforest' of bitbucket.org:petsc/petsc:
removed debugging print
DMP4est: regression test for ex11
Plex: correct memory management in DMProjectFunctionLocal_Plex()
Plex+FVM: correct counting of fluxes
trying to fix a BC bug
TS+Plex: provied face geometry for essential bcs
TS+Plex: added boundary routines for DMTSLocal, and PlexFEM/FVM implementations
SNES+Plex: added DMPlexSetSNESLocalFEM()

Conflicts:
include/petscdmplex.h
src/snes/examples/tutorials/ex62.c
src/ts/utils/dmlocalts.c
src/ts/utils/dmplexts.c

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Plex+TS: Added DMPlexTSComputeBoundaryFEM()
- Just calls DMPlexInsertBoundaryValues()

DMTS: Added DMTSSetBoundaryLocal()
- Put BC calls into DMTS computation functions

TS+Plex: provied face geometry for essential bcs

TS+Plex: added boundary routines for DMTSLocal, and PlexFEM/FVM implementations

TS+Plex: Added IJacobian assembly functions

DMP4est/DMPlex: Share DMSNES/DMTS information when converting

This includes "A", "dmAux" and "dmCh" for now.

dmplexts: try to convert if not plex