Merge branch 'prbrune/snes-snescomposite' into prbrune/snes-snesfunctiontype

Fix the conditions for SNESSetInitialFunction(Norm)() for function types.

Merge branch 'prbrune/snes-npcjacobianlagging' into prbrune/snes-snesfunctiontype

Conflicts:
src/snes/examples/tutorials/makefile
src/snes/impls/ls/ls.c
src/snes/impls/ngmres/snesngmres.c
src/sn

Merge branch 'prbrune/snes-npcjacobianlagging' into prbrune/snes-snesfunctiontype

Conflicts:
src/snes/examples/tutorials/makefile
src/snes/impls/ls/ls.c
src/snes/impls/ngmres/snesngmres.c
src/snes/impls/qn/qn.c

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Use SNES_FUNCTION_DEFAULT to pick the preferred preconditioning setup per method

Added SNESGetPCFunction() which decides how to get the function from the NPC.

Remove accidental additions of PETSC_NULL from snespc.c

Check converged reason of snes->pc under new preconditioning organization.

In the case of the PC application, the SNES aborts with reason DIVERGED_INNER.
In the case of the line search, a failure of

Check converged reason of snes->pc under new preconditioning organization.

In the case of the PC application, the SNES aborts with reason DIVERGED_INNER.
In the case of the line search, a failure of the preconditioner looks like
a function domain error (so that exit will be proper).

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NEWTONLS works with preconditioned and unpreconditioned functions.

ASPIN (or other left-preconditioned Newton methods) can be run with
either the usual function or the preconditioned function monito

NEWTONLS works with preconditioned and unpreconditioned functions.

ASPIN (or other left-preconditioned Newton methods) can be run with
either the usual function or the preconditioned function monitoring
convergence.

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SNESLinesearchSetFunction() for setting what function the line search uses

Add SNESApplyPC() replacing the PC_LEFT control path in SNESComputeFunction()

Added SNESFunctionType,SNESGet/SetFunctionType()

Changed SNESNormType to SNESNormSchedule to better describe what it does.

SNESView: notify user when SNES has not been set up yet

Suggested-by: Peter Brune <brune@mcs.anl.gov>

logging memory now credits to all ancestors

Use classname in object for object name when calling PetscObjectPrintClassNamePrefixType() instead of some string with less precise name passed in

Better scoping for -snes_fd_color option to prevent odd side-effects

Getting the DM in SNESSetFromOptions broke FAS. As -snes_fd_color has no real use
in SNESFAS, SNESGetDM should only be called wh

Better scoping for -snes_fd_color option to prevent odd side-effects

Getting the DM in SNESSetFromOptions broke FAS. As -snes_fd_color has no real use
in SNESFAS, SNESGetDM should only be called when needed in SNESSetFromOptions().

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Mat: remove third argument to MatNullSpaceRemove

Out of place removals were dangerous because the MatNullSpace held the
only reference to the resulting Vec, which is dangerous. This use case
is rar

Mat: remove third argument to MatNullSpaceRemove

Out of place removals were dangerous because the MatNullSpace held the
only reference to the resulting Vec, which is dangerous. This use case
is rare (never used in PETSc itself) and can easily be accomplished:

VecDuplicate(x,&y);
VecCopy(x,y);
MatNullSpaceRemove(nullsp,y);

Suggested-by: Tobin Isaac <tisaac@ices.utexas.edu>

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Setting -snes_fd_color clears the Jacobian context.

Fix for user-provided MatFDColoring in SNES

fixed bug where XXXViewFromOptions() used prefix of object rather than appropriate prefix of KSP or SNES

Suggested documentation fixes for SNESSetLagJacobian/PreconditionerPersists()

SNESComposite: Additive or Multiplicative composition of different SNESes.

PetscStackCallBLAS: new macro instead of PetscStackCall (skip CHKMEMQ)

When CHKMEMQ occurs on every call to BLAS or Lapack, we sometimes see
unacceptable performance degradation (orders of magnitude

PetscStackCallBLAS: new macro instead of PetscStackCall (skip CHKMEMQ)

When CHKMEMQ occurs on every call to BLAS or Lapack, we sometimes see
unacceptable performance degradation (orders of magnitude).
PetscStackCallBLAS is currently identical to PetscStackCall except for
skipping CHKMEMQ, but such checking could be made optional in the
future.

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Merge branch 'prbrune/snes-npcrhsfix'

* prbrune/snes-npcrhsfix:
Fix for unfreed vector in src/snes/examples/tutorials/ex15.c
Made ex15.c have an RHS instead of a constant forcing in the function

Merge branch 'prbrune/snes-npcrhsfix'

* prbrune/snes-npcrhsfix:
Fix for unfreed vector in src/snes/examples/tutorials/ex15.c
Made ex15.c have an RHS instead of a constant forcing in the function.
Fix to RHS bug in nonlinear left preconditioning

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Merge branch 'jed/snesgetlinesearch'

* jed/snesgetlinesearch:
SNESGetSNESLineSearch / SNESSetSNESLineSearch: mark as deprecated (C interface only)
SNESGetLineSearch / SNESSetLineSearch: rename f

Merge branch 'jed/snesgetlinesearch'

* jed/snesgetlinesearch:
SNESGetSNESLineSearch / SNESSetSNESLineSearch: mark as deprecated (C interface only)
SNESGetLineSearch / SNESSetLineSearch: rename for consistency
SNESGetSNESLineSearch: use auto Fortran binding

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