converted ex18.c to use SNESSetDM()
if snes->dm provides initial guess function use that

Hg-commit: 3bdf7de5142e018b6e065ff4476eda0fb1db8ee0

converted another example to SNESSetDM from DMMGSetSNESLocal
allow SNESSolve to be called with null x argument

Hg-commit: 89afdad1a40428f4aef17067e07560da6e69cf44

Added SNESSetUseGS() to provide choice between preconditioner or provided GS for all composable solvers

Hg-commit: 4548a4ad4302bbc6f1115e9cb84fa303ab7ded01

merge Get -> Create renames

Hg-commit: ab2f843211dbcdafb25f286133a7f9362b66b756

Renamed DMGetInterpolation(), DMGetInjection(), and DMGetColoring() to DMCreateInterpolation(), etc for semantic consistency

Hg-commit: a45bcab2b329db85bdff728f3e039f094e2e00b9

Rename DMGetMatrix() to DMCreateMatrix()

Hg-commit: 045e13fbce4683d1c6e7208d70318a9e4dde5c0b

fixed a bunch of outdated names

Hg-commit: 5ab991c41c1fdf11aede714ab011920b9dcd7291

commit after merge

Hg-commit: 5ce726e46735e1f46d11609a0f35bda1686bdf8f

doc and interface fixes for FAS and GS

Hg-commit: 92df16ff4c9d6f09b21386898b45c8538f886b88

added SNESSetPicard() to PETSc and augmented an example to demonstrate its use.

Hg-commit: 183a2eb76a757adb746563d18f579fc4e28f0a28

commit after merge

Hg-commit: 4afddb78e4d16b99952e891a10244a92ea0015ab

added computeGS, akin to computefunction and computejacobian, to SNES

Hg-commit: 4cd394b34d6c2d0a42d7bff7da4a2f63ed0ff71f

Bug fix for SNESDefaultComputeJacobianColor with nonzero affine part

Hg-commit: 496ae4df91cc45b18143fc08596bf89ff6ec1919

commit after merge

Hg-commit: 072d3613caf2b1953e19eb41aaee719c87da3dc8

reorganized SNESVI to two solvers SNESVIRS and SNESVISS in seperate directories without being intertwined though they share some common code
removed rsaug from being built since is broken

Hg-commit

reorganized SNESVI to two solvers SNESVIRS and SNESVISS in seperate directories without being intertwined though they share some common code
removed rsaug from being built since is broken

Hg-commit: 31c8ce4101ddfbfe4fc6d005d66ef14f58ee082a

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Remove TSDefaultComputeJacobian{,Color}() and MatFDColoringApplyTS(); update all the examples that were still using the old style

Hg-commit: 6677905c965471eda292ff1997e1a953222a27c5

added nightly test for ex58 DVI solver

Hg-commit: beccfc62fb201f76ecc2892bd7c5c74f5ee4468f

removed usage of sqrt() from the snes solvers

Hg-commit: f1ceb88769eb40be9b76d6268f18b933f807fab4

replaced many sqrt() in PETSc with the proper PetscSqrtRead/Scalar() business

Hg-commit: 4b2ba7d0f24d7c387a3592e4b32f5444ddf5c08c

better fix for #91357 [use SNES_LS_USER_DEFINED instead of -1]

Hg-commit: e67675353bddd80ce585a4d1d78fc8665a85d007

#91357 revert change in e492d8adec9a thats breaking pflotran

Hg-commit: c5ca587f369a392d30341aa4f980df51f318fa81

Add some man page links regarding SNESSetGridSequence() and SNESGetSolution()

Hg-commit: 39673d6c19fe13d517593374c8b70dc364662808

Update man page for -snes_compare_coloring_*

Hg-commit: b90f958e7580935fc413ebe1a43dc5bdd5b72023

Add more tricks for inspecting user Jacobians by comparing to FD colored versions

Hg-commit: dbf9f84d07327ab8f2be6a1ae97121d454383f73

Add -snes_compare_coloring_draw and similar.

These versions scale to larger problems, but only compute within the
same sparsity pattern. This is useful to see if the differences within
the given sp

Add -snes_compare_coloring_draw and similar.

These versions scale to larger problems, but only compute within the
same sparsity pattern. This is useful to see if the differences within
the given sparsity pattern are localized (probably boundary conditions)
or distributed (likely problem in the interior).

Hg-commit: 761e8484920ff8892066732497800355a2f569cb

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