merge DMRedundant work

Hg-commit: 2ed262b5af301f4daec16b015285890f6c422d3f

Pass 0 instead of PETSC_NULL when an integer value is intended

Hg-commit: 11376ffd9e794c536b23e0654d69245d73f33be9

minor optimize MatRARt() - replacing rart->ARt with a working array

Hg-commit: cc2fd283875873044ad1222f76dbbbd21333c2d7

add MatMatMatMultNumeric_SeqAIJ_SeqAIJ_SeqDense() to replace two calls of MatMatMultNumeric_SeqAIJ_SeqDense()
in MatMatMultNumeric_SeqAIJ_SeqDense()

Hg-commit: fe753164d1bd5eca02d304c6200f71465bd52d

add MatMatMatMultNumeric_SeqAIJ_SeqAIJ_SeqDense() to replace two calls of MatMatMultNumeric_SeqAIJ_SeqDense()
in MatMatMultNumeric_SeqAIJ_SeqDense()

Hg-commit: fe753164d1bd5eca02d304c6200f71465bd52d80

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minor optimize and cleanup MatTransColoringApplyxxx_SeqAIJ()

Hg-commit: a55c021e27de260c5acea53898ef805271d83837

build fix for MatRARt()

Hg-commit: c5ab2a17471b97356468c69ab13ea5618ec37538

implement MatRARtNumeric_SeqAIJ_SeqAIJ()

Hg-commit: 6ae8d7bc1e0ededdcb612bd3e34c064132c4cdc4

implement MatRARtSymbolic_SeqAIJ_SeqAIJ()

Hg-commit: 11be67b911abdb77687f1fdec535e87cedc2d6ec

Documentation fixes for options for specific matrix solvers

Hg-commit: 100174d3da01faeba57dc2a3a183284bcb1b0654

Mat preallocation: check valid type and logically collective block size

Hg-commit: 14994399c05663553b5763e55847cd01074430ab

add MatRARt() - not implemented yet.

Hg-commit: 65fdbc10f6464890cbf50cb97884b70e94f69e28

Adding multiple dispatch op registration/query to Mat. Untested.

Hg-commit: 38e0676c6c02b6cbb7e5c9245ecd48f3de129858

forgot comment out unused olddatastruct in previous change

Hg-commit: b8d5a3c7b1c3e53c78e351e1bff488447af2c9a5

comment out the option '-lu_old' - a leftover of previous development.

Hg-commit: c7263d2a02a4089084707613a9bdb7bf3414a9d5

optimize MatTransposeColoringCreate() - rm the loop of set c->columnsforspidx to be ...which is copied
from MatSetValues()

Hg-commit: c4117456701b2c5baf9cb52fda054ff92235de11

rename MatMatMultTranspose -> MatMatTransposeMult

Hg-commit: 01c7e252d74f5cf47118da6b8579e45c5ddab540

rename MatMatTransposeMult -> MatTransposeMatMult

Hg-commit: 648f0d8ea3906e864ed4d348657217958e0988fb

optimize MatTransposeColoringCreate_SeqAIJ()

Hg-commit: d248d505f1d1e32fe6a1e2f10bd398cfb5a2f930

rm columnsforrow from MatTransposeColoring (replaced with columnsforspidx)

Hg-commit: 14ea941c43e20babc30b1aa2c43b668b07ededfd

Rename MatMultTransposeColoring -> MatTransposeColoring

Hg-commit: b1ad3f6ade077795243aac5f5b6c457d361a56dc

optimize MatMultTransColoringApplyDenToSp() by using matcoloring->columnsforspidx
which is created and set in symbolic A*B^T. Now, ColoringApplyDenToSp() takes approx. same
time as ColoringApplySptoD

optimize MatMultTransColoringApplyDenToSp() by using matcoloring->columnsforspidx
which is created and set in symbolic A*B^T. Now, ColoringApplyDenToSp() takes approx. same
time as ColoringApplySptoDen!

Hg-commit: 77edfd7f1e4f4454f674f55014ed784a558226b3

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cleanup matmatmult.c

Hg-commit: fa3b75eafdbba6e813362477cf510d08221b043a

optimize MatMultTransColoringApplyDenToSp_SeqAIJ(): now it takes less than 50% of previous execution time :-)

Hg-commit: 50e2b6695ba005506b6de33f6a335a5733834aa7

windows compile fixes

Hg-commit: 12743a043219ce50ccb3368c302410e0631c5488

continue working on MatMatMultTranspose() using matcoloring

Hg-commit: d5eaa590f50dfd2e563303d7f8200766033bba6c