bugfix of MatGetInertia_SeqSBAIJ() when matrix factor has errortype==MAT_FACTOR_NUMERIC_ZEROPIVOT
add tests for MatGetInertia()

MatNorm: fix missing PetscLogFlops

Reported-by: Anishi Gupta <anishi.anishi@gmail.com>

set solvertype for inplace MatxxxFactor()

Fix null output from PCFactorGetMatSolverPackage();
Reported-by: Jose E. Roman <jroman@dsic.upv.es>

Merge branch 'hzhang/matgetsubmat_sbaij1'

Fixes found by clang static analyzer
mostly set but unused variables plus a couple of true bugs

cleanup MatGetSubMatrices_MPISBAIJ()

cleanup: rm MatGetSubMatrix_SeqSBAIJ_Private(); factor out MatSeqSBAIJZeroOps()

rm checking of (isrow != iscol) in response to Jose's request for SLEPc; Zero some ops' to avoid invalid use of MatGetSubMatrices_SeqSBAIJ()

Merge branch 'barry/fix-private-functions'

PetscDraw: Explicitly save draw in {Vec|Mat|DMDA}View() routines

PetscDraw: Fix MatView() for MAT{SEQ|MPI}{[S|SB]AIJ|DENSE}

Cholmod routines mistakenly listed as static but used in multiple files

Tao Fortran stubs not properly marked with PETSC_EXTERN so would not work with multiple libraries and visibility turned on
Fixed a couple more unneccessarily visible functions

More decreasing visibility of symbols from outside libraries
Also fix a few bugs related to having multiple PETSc libraries

Merge branch 'hzhang/inode-erroriffpe'

missing 'bs' in the doc of MatSeqSBAIJSetPreallocationCSR - reported by Marco Schauer

optimize by moving allowzeropivot = PetscNot(A->erroriffailure) out of loop

allow zeropivot PetscKernel_A_gets_inverse_A()

replace !PetscBool with PetscNot(a)

add allowzeropivot and zeropivotdetected to PetscKernel_A_gets_inverse_A_#

rename crash and wouldcrash -> allowzeropivot and zeropivotdetected as suggested by Barry

add 'PetscBool crash,PetscBool *wouldcrash' to PetscKernel_A_gets_inverse_A_3() to handle zeropivot error

Merge branch 'hzhang/matpackage-erroriffpe'

Revert "replace 'const MatFactorInfo' to 'MatFactorInfo' in MatFactor routi"

This reverts commit 927faaad4e7a9177b263c19fc2f4e1f9dae8f67a.