PCBDDC: fix warnings from nightly builds

PCBDDC: The resulting MatIS has to have local matrices of the same type -> default is SeqAIJ

PCBDDC/KSPFETIDP: fix for zero local size

PCBDDC/KSPFETIDP: added support for deluxe scaling with non-redundant multipliers

PCBDDC: should use MAT_REUSE_MATRIX and not MAT_INPLACE_MATRIX

PCBDDC/KSPFETIDP: prevent from propagating a PCSHELL

PCBDDC: informative error

PCBDDC: add prefix to sub_schurs and stop inferring hermitiannes and positive definitess

PCBDDC: move 2D/3D analysis after connected components have been computed

KSPFETIDP: move check for FETI-DP to FETI-DP class

implement MatGetSubMatrices_MPIAIJ_single() to optimize MatGetSubMatrices_MPIAIJ() when ismax = 1

update src/mat/examples/tests/ex4.c for testing MatGetSubMatrices()

introduce ctable to remove nons

implement MatGetSubMatrices_MPIAIJ_single() to optimize MatGetSubMatrices_MPIAIJ() when ismax = 1

update src/mat/examples/tests/ex4.c for testing MatGetSubMatrices()

introduce ctable to remove nonscalable malloc C->rmap->N array for MatIncreaseOverlap_MPIAIJ_Once()

remove nonscalable d_p by using ctable

add MAT_SUBMAT_SINGLEIS to MatOption. Set this flag in PCSetUp_ASM() to
reduce MPI_AllReduce() in MatGetSubMatrices()

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PCBDDC: add command line option to collapse deluxe operators

PCBDDC/KSPFETIDP: Fix for empty partition

Merge branch 'barry/fortran-update'

PCBDDC: fix twodim flag computation

PCBDDC: minor fixes for sequential runs

Set primal space flag to true the first time BDDC is setup

PCBDDC: added PCReset_BDDC

PCBDDC: restore local_subs to default and call Destroy on SubSchurs

PCBDDC: return if graph is null

PCBDDC: added Destroy method to SubSchurs

KSPFETIDP: call SetFromOptions at thr right place

FETIDP: add option switch for discrete harmonic Dirichlet solver

FETIDP: added PCView to the FETI-DP preconditioner

FETIDP: added prefix parameter when creating the objects

PCBDDC: fix warnings from nightly builds