Fix host memory registration logic.

The logic for when to register host memory is still pretty complicated
and should be simplified.

Check whether VecScatter is sequential in VecScatterInitializeForGPU.

Merge branch 'fix-scattertype' into fix-scatterinitcusp

The bug to be fixed in this branch requires us to be able to query
whether a given VecScatter is sequential or parallel. The
fix-scattertype b

Merge branch 'fix-scattertype' into fix-scatterinitcusp

The bug to be fixed in this branch requires us to be able to query
whether a given VecScatter is sequential or parallel. The
fix-scattertype branch contains new code specifically designed for this
task.

show more ...

Add VecScatterGetTypes_Private method.

Adding vtable to _p_VecScatter.

Also:
- put VecScatter methods into vtable.
- access VecScatter methods through vtable.

Introduce a VecScatter_Common header.

This is to allow more robust determination of the type of a
VecScatter_X_X.

Add VecScatterIsSequential_Private method.

if vector is of length 0 then VecSet() should set all norms to zero instead of triggering a divide by zero

Vec: Fixed storage initialization to also zero ghost portion

Merge branch 'stefano_zampini/pcbddc-primalfixes' into stefano_zampini/pcbddc_deluxe

Revert "Merge remote-tracking branch 'origin/jose/split-reduction' into maint"

should have checked namespace issues..

This reverts commit 52cbd52866ccab13bc62001b3276d0b542ea4117, reversing
changes

Revert "Merge remote-tracking branch 'origin/jose/split-reduction' into maint"

should have checked namespace issues..

This reverts commit 52cbd52866ccab13bc62001b3276d0b542ea4117, reversing
changes made to ccbd7ac4b2d5b3774d1161bff3961426efe80e9b.

show more ...

Merge remote-tracking branch 'origin/jose/split-reduction' into maint

ISStrideGetInfo() was called on non-ISSTRIDE IS

Reported-by: Tabrez Ali <stali@geology.wisc.edu>

Merge branch 'barry/fix-matlab-socket'

Conflicts:
makefile

matlab: update matlab related files with the new share/petsc/matlab location

Merge branch 'stefano_zampini/pcbddc-maint' into stefano_zampini/pcbddc_deluxe

ISLocalToGlobalMapping: added ISGlobalToLocalMappingApplyIS

Merge branch 'barry/fix-istogeneral_block'

fix for ISToGeneral_Block for a block size of 1

Reported-by: Lisandro Dalcin <dalcinl@gmail.com>

zvsectionisf90.c: fix unused variables warnings.

remame sources in src/vec/is/utils/f90-custom/ to z*f90.c notation
zisltogf.c -> zisltogf90.c
zvsectionisf.c -> zvsectionisf90.c
Also add zvsectionisf90.c to makefile [and enable its compilation]

mv src/vec/is/is/utils/ftn-custom/zisltogf.c src/vec/is/utils/ftn-custom/zisltogf.c

fortran: use auto generated interface for ISCompressIndicesGeneral()

fix compile warning

Merge branch 'jed/vecop'

* jed/vecop:
Vec: add man page for VecSetOperation