PCBDDC: set compute topography to true also when Local version of the boundaries API is invoked

Merge branch 'stefano_zampini/pcbddc-globalordering-api' into stefano_zampini/pcbddc-multilevel-improvement

Conflicts:
src/ksp/pc/impls/bddc/bddc.c
src/ksp/pc/impls/bddc/bddcprivate.c

PCBDDC: provide APIs for setting field split in global ordering

previous API moved to PCBDDCSetDofsSplittingLocal

For consistency with updated man pages, which_dof values should default to -1;
this

PCBDDC: provide APIs for setting field split in global ordering

previous API moved to PCBDDCSetDofsSplittingLocal

For consistency with updated man pages, which_dof values should default to -1;
this way, unlisted nodes in field split will belong to a different subset

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PCBDDC: provide API for global to local translation (more general than ISGlobalToLocal and memory scalable)

PCBDDC: provide API for setting Dirichlet/Neumann boundaries in global ordering

PCBDDC: replace SetXXXBoundaries with SetXXXBoundariesLocal (better logic)

PCBDDC: fix for new reuse logic in the multilevel case

Merge branch 'stefano_zampini/pcbddc-reusebddc' into stefano_zampini/pcbddc-multilevel-improvement

PCGAMGClassical: Standard interpolation now works for scalar problems.

PCGAMG_Classical: Begin standard interpolation; match direct.

This matches the direct interpolation previously implemented as
a bug check. The next step is to add the indirect entries.

PCView_FieldSplit_Schur: fix crash on view before setup

Reported-by: Kai Germaschewski <kai.germaschewski@unh.edu>

PCBDDC: remove unneeded code to check nearnullspace

PCBDDC: remove trailing whitespaces from source

Merge branch 'madams/gamg-destroy' into prbrune/pcgamg-classicalinterpolationstrategies

PCGAMG_Classical Separate thresholding for graph coarsening and prolongator

Cleanup of PCGAMGClassical Prolongator creation.

Simplification of graph creation in PCGAMG_Classical

some fixes in using AMG 'aggregates' in GASM smoothers

partial update of SAWs with master

crashes on mallocs, no idea why

Merge branch 'master' into barry/saws

Conflicts:
src/ksp/pc/impls/gamg/gamg.c
src/sys/classes/viewer/impls/ams/ams.c
src/sys/objects/pinit.c

PCBDDC: solved compilation error with complex build

protected for zero auxilary data size, fixed agg's destructor to unregister its setCoordinates method, changed name of a var for clarity

fixed incorrect sizeing in classical AMG

moved data movement code into its own scope to prepare for putting it into subclass

remove memory leak in PCSetUp_Residual() when it is called multiple times with the same nonzero pattern

Reported-By: Fabian Gabel <fabiangabel@hotmail.de>