replaced all left-over uses of a single PetscMalloc() to allocated multiple arrays: replaced with PetscMallocN()
The only ones left are when the second array is set into the first array and one ugly

replaced all left-over uses of a single PetscMalloc() to allocated multiple arrays: replaced with PetscMallocN()
The only ones left are when the second array is set into the first array and one ugly usage in the MUMPS interface that cannot be easily fixed

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Merged petsc/petsc into rmills/petsc master.

Merge branch 'stefano_zampini/pcbddc-for-complexes'

* stefano_zampini/pcbddc-for-complexes:
PCBDDC: Solved compilation errors and warnings for complex builds

Merge branch 'stefano_zampini/pcbddc-development'

Conflict with 'jed/matnullspaceremove-inplace', resolved using:

$ git merge -X theirs --no-commit stefano_zampini/pcbddc-development
$ git grep

Merge branch 'stefano_zampini/pcbddc-development'

Conflict with 'jed/matnullspaceremove-inplace', resolved using:

$ git merge -X theirs --no-commit stefano_zampini/pcbddc-development
$ git grep -l MatNullSpaceRemove src/ksp | xargs perl -pi -e 's@(MatNullSpaceRemove\([^,]+,[^,]+),NULL\)@$1)@'
$ git commit -a

* stefano_zampini/pcbddc-development:
PCBDDC: add wrappers for PetscStackCallBLAS
PCBDDC: Final fix for locally periodic problems
PCNNCreateCoarseMatrix: fix allocation error
PCIS: consider myself as a neighbor when classifying interface nodes
PCBDDC: Remove misuses of neighbours_set in FETI-DP code
PCBDDC: Coarse solution lives in the span of phi (not psi)
MATIS: Add IsSymmetric and IsHermitian implementations
PCBDDC: More robust method to compute local boundary nodes
PCBDDC: Add partial support for periodic problems replacing Sort with RemoveDups
PCBDDC: Add support for non-symmetric linear systems
PCBDDC: Stiffness scaling should be rebuilt in any case (just to be safe)
PCBDDC: Remove trailing blanks
PCBDDC: Consistency of CSR graph passed in postponed to PCSetUp
PCBDDC: Preliminary work to split PCBDDCCoarseSetUp in simpler pieces
PCBDDC: allow compilation without metis header
PCBDDC: Optimal allocation in PCBDDCGetPrinalVerticesLocalIdx
PCBDDC: add verbosity level to graph view
PCBDDC: change boolean debug flag to integer -pc_bddc_check_level
PCBDDC: Workaround for BAIJ local matrices: convert to AIJ for coarse matrix
PCIS: Use PETSC_COMM_SELF instead of MPI_COMM_SELF
PCBDDC: many changes
ISG2LMapApply: fix __FUNCT__ and invalid access before globals are set up

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PCBDDC: Solved compilation errors and warnings for complex builds

Example code changed by using LAPACK steqr method.

PCBDDC: Remove misuses of neighbours_set in FETI-DP code

PCBDDC: Remove trailing blanks

PCBDDC: many changes

- Source code split
- Added Reset procedures
- Support for different MatStructure flags