add MatConvert_sbaij_elemental()

Added VecLockPush() and VecLockPop() to make vector read only
Used VecLockPush() and VecLockPop() in a couple of key locations; PCApply(), KSPSolve(), MatMult()
Fixed many uses of VecGetArray() to Ve

Added VecLockPush() and VecLockPop() to make vector read only
Used VecLockPush() and VecLockPop() in a couple of key locations; PCApply(), KSPSolve(), MatMult()
Fixed many uses of VecGetArray() to VecGetArrayRead()
Added VecGet/RestoreArrayPair() for commonly occuring pattern
Added const to many locations driven by use of VecGetArrayRead()

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Merge branch 'maint'

cannot call PetscObjectGetName() on a subset of the MPI processes

Merge branch 'maint'

MatView() with some matrix formats and ASCII_MATLAB did not print correct matrix name

Reported-by: Michael Souza <souza.michael@gmail.com>

manual merge of conflict

Merge branch 'barry/remove-unneeded-paren-petscmalloc'

Conflicts:
src/mat/impls/baij/seq/baij.c

Merge branch 'barry/fix-matsetsize-matload'

Conflicts:
src/mat/examples/tests/makefile

convert some PetscMalloc() to PetscMalloc1()
remove unneeded () in first argument to PetscMalloc/Calloc1()
fixes for MATLAB examples

bugfix of MatAXPY() with case SUBSET_NONZERO_PATTERN for sbaij matrix, see report by Jose Roman, Nov 11, 2014
This is on master branch (same fix was done on maint) to avoid too much conflict with mai

bugfix of MatAXPY() with case SUBSET_NONZERO_PATTERN for sbaij matrix, see report by Jose Roman, Nov 11, 2014
This is on master branch (same fix was done on maint) to avoid too much conflict with maint

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Allow setting the matrix block size with MatSetBlockSize() before calling MatLoad()

Reported-by: Steena M <stm8086@yahoo.com>

Moved registration of MatSolverPackages out of MatCreate_XXX routines into standalone system, this allows
1) more precise error message when a requested solver is not found
2) easier to add new solve

Moved registration of MatSolverPackages out of MatCreate_XXX routines into standalone system, this allows
1) more precise error message when a requested solver is not found
2) easier to add new solvers without touching basic PETSc matrix implementation files and the possibility of adding new solvers to the library after PETSc is installed or even at run time

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Merge branch 'hzhang/mat-redundant_sbaij'

call MatDestroy_Redundant from MatDestroy() instead of from MatDestroy_XXX()

merge MatCreateMPIAIJConcatenateSeqSBAIJSymbolic and xxxNumeric into MatCreateMPIMatConcatenateSeqMat_MPISBAIJ()

rm MatGetRedundantMatrix_xxx()

MatGetRedundantMatrix_MPISBAIJ() calls MatCreateMPIMatConcatenateSeqMat(); delete MatCreateMPISBAIJConcatenateSeqSBAIJ

fix block size; intend to unify MatGetRedundantMatrix_XXX to MatGetRedundantMatrix()

delete MatGetRedundantMatrix_MPIAIJ_interlaced() because it does not do better than MatGetRedundantMatrix_MPIAIJ() with psubcomm_type interlaced

Merge branch 'barry/fix-options-default'

Conflicts:
src/ksp/ksp/examples/tutorials/ex52.c

bugfix for MatGetRedundantMatrix() with user provided subcomm

rm psubcomm from Mat_Redundant

cleanup of use of PetscOptionsInt and friends including use of flag final argument

mv struct 'Mat_Redundant' to '_p_Mat’ for simplify codes