Strip out bad idea of holding vec_sol in SNESDM, implement DMGetNamedGlobalVector() and implement restriction with it

Hg-commit: 0040de20b98becd00af00473b94f3d32a4299b3d

Add DMSetMatType() routine

Hg-commit: 16fe8f829feebd59d926bfa8525a75b7847c3faa

MPI_COMM_NULL for DMRefine/DMCoarsen

Hg-commit: 40889e4a65f950822d5a4633e40cb32f85970ecb

Doc fix for DM, Removed PETSC_COMM_WORLD

Hg-commit: 8aa482f35788fe9996bb445c8e32fa3022ab00b1

Allow PCFIELDSPLIT to use DMCreateDecomposition by name.

Hg-commit: e4ca525c39fd35cca849d095040a2de0488f347b

Rename include/private/ to include/petsc-private/

Hg-commit: 9a1730720b0d9756437b40462617551504641ade

Fix incorrect handling of multiple DMCoarsenHooks

Hg-commit: 32cf90959ef818edd1018cf5f7e95dcc8f8d51a0

Fix DMCreateFieldIS() to use const correctly, fix DMCreateFieldIS_Composite() to use memory correctly, ex28 working again

Hg-commit: 5318c65c97c0137d5e6056367b55f30e15ba79a1

Forward dm->ops->creatematrix in DMRefine() and DMCoarsen()

Hg-commit: 72b042146c43711bc984cd5d7cfa5d7939f17947

Refactor SNES DM infrastructure

The residual and Jacobian function pointers are now stored in a managed
context on the DM. Coarsening of this context is handled by a
DMCoarsenHook, so the coarse lev

Refactor SNES DM infrastructure

The residual and Jacobian function pointers are now stored in a managed
context on the DM. Coarsening of this context is handled by a
DMCoarsenHook, so the coarse level DM automatically has function
pointers for residual evaluation. The SNESDM context (attached to a DM)
has copy-on-write semantics for all DMs other than the one it was
originally created on. That means that changes to the function pointers
from the fine level are automatically propagated unless a coarse level
is changed manually.

Hg-commit: ce0066853e1ef4402603a33070cb3bfd75c87f86

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Add DMSHELL

Hg-commit: fc04c456a82cd4d71871f666592193a63cdb0f7c

Cannot use generated Fortran for DMCreateFieldIS()

Hg-commit: 4294746fb52df7de073f02dd34ed67671731c635

Added DMCreateFieldIS() and used it in PC FieldSplit
- Its named Create because it allocates the structures and hands them off

Hg-commit: 9b20da4e48454a41d1ba8295be242cba29048daf

No fortran stub for DMSetVec yet.

Hg-commit: bedc584b125201c87b4f73900e370e884dfe2657

Doc fixes.

Hg-commit: a744e744e56a1a2ac57eb47040a281535bda026c

DM computes variable bounds for SNESVI.

Hg-commit: ce166067903bacf34e561bc2e6893236d6c213a7

Fix some printing issues that were breaking complex build

Hg-commit: 77aafa03f20d4798e1746df44f9705cb723c3293

Ensure that obj->ops->destroy is zeroed in XXSetType() after the old implementation has been destroyed.

There are circumstances where VecSetType() is called more than once to
change the type without

Ensure that obj->ops->destroy is zeroed in XXSetType() after the old implementation has been destroyed.

There are circumstances where VecSetType() is called more than once to
change the type without an intervening XXCreate_YY(). An example is
changing to VECSEQCUSP via VECCUSP.

Hg-commit: 1262149b3e206062ad0b002925300684fd3420e8

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Rudimentary TikZ viewer for DMComplex

Hg-commit: 2b5f161db007cc7aa541be441746b0d05f107522

Remove SNESRestrictHookAdd() and associated unaintainable design, move to DM

The coarsening hook is called when a coarse level is first constructed.
DMRestrict() is used to update auxiliary informat

Remove SNESRestrictHookAdd() and associated unaintainable design, move to DM

The coarsening hook is called when a coarse level is first constructed.
DMRestrict() is used to update auxiliary information on coarse grids.

Hg-commit: 121984cbeafd368f2685a0e7485337133d3b8922

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Small fixes

Hg-commit: 458475b74d545092d0d6a86595607e0deab73107

fix c++ syntax

Hg-commit: 830a7684f7a2202a8a41b1ffdcb11c0a8f4d3ddd

Bug fixes for DMComplex
- Registered type
- Create default SF
- Fix up refinement

Hg-commit: 187a5ba47048291cd28cfccbc4ac19d8aa9cb35c

Allow inner DMRefine() to return PETSC_NULL meaning no refinement was done

Hg-commit: 8b197d57cd167fd76d5ce7bc9fa18742964a31bc

Lots of work on DMComplex
- Added PetscSectionCreateGlobalSection()
- This makes a Section which has global offsets, negative for ghosts
- Now negative sizes are not counted for PetscSectionGetSt

Lots of work on DMComplex
- Added PetscSectionCreateGlobalSection()
- This makes a Section which has global offsets, negative for ghosts
- Now negative sizes are not counted for PetscSectionGetStorageSize()
- Added DMPrintCellVector() and DMPrintCellMatrix()
- Added PetscQuadrature structure
- Added SNESDMComplexComputeFunction/Jacobian()

Hg-commit: 93e35c5fb2848c5fd712d4bd760214daf5e64247

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