Plex: Now -dm_plex_separate_marker works correctly in DMPlexCreateSquareBoundary()

DMLabel: Added DMLabelInsertIS()

Merge branch 'knepley/feature-composable-callbacks'

* knepley/feature-composable-callbacks:
TS ex28: Updated to new kernel interface
SNES ex62: Updated to new kernel interface
SNES ex12: Updat

Merge branch 'knepley/feature-composable-callbacks'

* knepley/feature-composable-callbacks:
TS ex28: Updated to new kernel interface
SNES ex62: Updated to new kernel interface
SNES ex12: Updated to new kernel interface
Plex ex3: Updated to new kernel interface
PetscDS: Added NfAux argument to FE kernels
PetscDS: Change signature of Jacobian functions to include the shift a for dF/dU_t
PetscDS: Cleanup - Removed silly consts - Removed unused vars - Fixed declarations
TS: Took extra space out of default monitor
TS ex18: Updated Riemann and pointwise interface
TS ex11: Updated Riemann interface
PetscDS: Added dimension and num fields to Riemann interface
PetscDS: Added missing declarations
SNES ex62: Updated to new pointwise interface
SNES ex12: Updated to new pointwise function interface
Plex+FEM: Update to new pointwise function interface - Basically need to also pass in field offsets
PetscDS: Change interface to pointwise functions - This is intended to make pointwise functions composable - Make function typedefs public - Store component and derivative offsets since they will be provided to the pointwise functions

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Plex ex3: Updated to new kernel interface

PetscDS: Added NfAux argument to FE kernels

Plex-Fluent: Honour EOF check in Fluent-specific string reader

Plex-Gmsh: Aggregating inner binary element reads

Plex-Gmsh: Aggregating binary coordinate reads

Plex-Gmsh: Aggregating meta information reads

Plex-Gmsh: Avoid memory allocation during element read loop

Plex-Gmsh: Move element read loop into DMPlexCreateGmsh_ReadElement

Plex-Gmsh: Profile Gmsh reader performance

Merge branch 'master' into knepley/feature-composable-callbacks

* master: (151 commits)
PetscMalloc: Fix handling of zero-sized allocations
add note to DMGetLocal/GlobalVector() about intended s

Merge branch 'master' into knepley/feature-composable-callbacks

* master: (151 commits)
PetscMalloc: Fix handling of zero-sized allocations
add note to DMGetLocal/GlobalVector() about intended short-time usage of the vectors.
sf: use patched openmpi tarball that has a potential fix for sf example hang
SNES problems that set VI bounds must use a VI solver since the other solvers ignore the bounds
pounders viewer did not cast PetscReal to double in printf nor use %D instead of %d
fix ts ex20adj
fix ts theta
fixed another variable declaration in the middle of a code block
example main() had PetscInt return type and argument that should be int
DMDAVTKWriteAll_VTS: Fix handling of higher-dimension coordinates
fixed example that declared variables in the middle of a function
C programs do not return PetscInt nor do they take an argument that is PetscInt, fixed example that did
You cannot declare variables in the middle of functions in PETSc.
add ierr checking to PetscOptionsBegin/End() in example
configure: add error check if user specifies PETSC_ARCH=-dbg [i.e starts with a '-']
scale norm of vector difference by norm of vector to insure it is small enough to consider the two vectors equal
missing PetscViewerDestroy() added
MatNestGetISs: use custom fortranstub to handle PETSC_NULL_OBJECT
update location of open-mx website on FAQ page
If the user sets bounds and calls a solver that does not support them, throw an error.
...

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Plex ex4: Added tests for uninterpolation

Plex: Fix up SF for parallel uninterpolation

PetscHeaderCreate: Shorten argument list and optimize memory allocation

* Remove type arguments from the macro
* Use a single memory allocation call instead of three

Plex: These functions should not have been static

fixed missing CHKERRQ() detected by clang's --analyze

changed from CHKFORTRANNULLOBJECT() to CHKFORTRANNULLOBJECTDEREFERENCE() where appropriate in custom Fortran stub files

updated PETSc directory layout to match standard packaging strategies

include/petsc finclude,private,mpiuni
lib/petsc conf
bin/petsc*