Added Shanno-scaling and more clear preconditioning application to QN

Hg-commit: 2c48c51240a6024a195fcdd9a0510700000ee00a

Add support for SNES restrict hooks

Hg-commit: ff3d7858dc3b26c3b71aefedea52eed94d9a80c7

Add SNESFASRestrict() to abstract restricting using injection.

I screwed up earlier commit where this function was first used, but too much work to fix with Hg.

Hg-commit: 16a2bd033711f6abe8e78a19a

Add SNESFASRestrict() to abstract restricting using injection.

I screwed up earlier commit where this function was first used, but too much work to fix with Hg.

Hg-commit: 16a2bd033711f6abe8e78a19a4d576d0f7687257

show more ...

Add SNESFASCreateCoarseVec() for clarity and because rscale need not exist if injection is used

Hg-commit: 73a07f66fd1742bba4173d7ca11a136fdf510fe4

Clean up dynamic function registered by FAS

Hg-commit: 5cfd139935dd7272a283645b00bb6168c80f65e9

Close memory leaks if user calls SNESFASSetRestriction() and friends more than once (or after they were first created from DM)

Hg-commit: aa47a99ab00ea5f8bba956369f7a1a9ee23af78d

SNESFAS comments, error reporting fixes

Hg-commit: 70e9259777382fdb904549785a91cab9518a174a

set snes->max_its and snes->max_funcs to be appropriate values for new SNES solvers

Hg-commit: 178cccead9cd0386074217651ed25b5a410dcd41

Move PetscObjectGrantAccess() to the right place

Hg-commit: 0e532622f545438e7ef64b9ac16d1d201f23e8a2

made NGMRES and FAS save function evaluations when preconditioned; added -snes_gs_norms; output fixes

Hg-commit: f7cef9644b64612473282b091d00a90d10304349

Add multi-stage methods with optimal damping parameters

Hg-commit: 7d099e9e38dc4607e146945acd65050369bc1442

push complex fixes.

Hg-commit: bd101b63c4e709cf37bcf900ca67618ae6a45f17

Add SNESMS: multi-stage smoothers, a nonlinear analogue to polynomial smoothers

Hg-commit: 3de9c70f2af1c2a7d27b25f3ed88b30b58a24e48

Close memory leak in NGMRES

Hg-commit: 301eedf2a7c5aba6ecf0e464ec2849b95ea738ef

Fix reference counting for FAS

Hg-commit: ed3812babaf45f37e4ebfcfa170db0862039635a

SNESSolve_GS() should have snes->reason = SNES_CONVERGED_ITERATING during the iteration

Hg-commit: 73c6f6371843da93f731ba0e2a855a80ee9417b5

SNESReset_XXX does not need to mess with work vectors

Hg-commit: 386f6e43210e955c03106668c7484128e96eb8cd

SNES_QN naming and formatting

Hg-commit: e8eb82cbb9213e6ee2c60d6f1de61556d9e3e10d

added more FAS configuration options for ease of use; fixed some Gauss-Seidel bugs in ex50.c

Hg-commit: 70d707c0f88b72c9cde1645d9bf19ccb1a290036

changed ngmres to use VecMDot and VecMAXPY

Hg-commit: 53d2b22f48b42d401d93001fe24bd863a5bc980a

more FAS fixes for composition

Hg-commit: d5d168d0d0e59ce0eaa0fda2d31e15d9f48712c6

small fix for complex build

Hg-commit: 0ec61aa843b25ef56f6709eac9df8171088bdeed

more FAS fixes

Hg-commit: b27693eb0e3ab2e9184c70422c5f5b082f6eb8df

fixed test examples to be the same with new fully composed FAS

Hg-commit: e5edd82745d1d744647fea4d60bfaf7d38c1ad72

removed snes_use_gs and snes->usegs; use SNESGS instead now

Hg-commit: 33cdc58540214fb127aed640a53850526359edf5