PetscFE: OpenCL is hardcoded for P0 coefficients right now

PetscFE: Added auxiliary fields to PetscFEIntegrateJacobian()
- Hooked it up to DMPlexComputeJacobian()

dmplex: windows compile fix

DMPlex+PetscFE: Fix compile errors for complex
- LAPACK calls still broken

DMPlex+PetscFE: Looks like boundary integration is working
- DMComputeResidualFEM() checks for feBd, and does bd integral if present
- Normals are still not being calculated
- Added PetscFEIntegrateB

DMPlex+PetscFE: Looks like boundary integration is working
- DMComputeResidualFEM() checks for feBd, and does bd integral if present
- Normals are still not being calculated
- Added PetscFEIntegrateBdResidual() and a basic implementation
- Added normals to PetscCellGeometry
- Auxiliary fields not turned on in bd integrals

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PetscDualSpace: Added 1D reference element

PescFE: Corrected spelling, Fixed pointer check

PetscFE+OpenCL: It appears that P0 variable coefficient is working
- Also cleaned up kernel generation

PetscFE: Changed PetscFEIntegrateResidual() to take auxiliary fields
- Also changed the PetscFEM struct to take auxiliary elements
- Added P_0 Lagrange element

PetscFE+OpenCL: Fixed number of blocks
- Now test should pass

PetscFE+OpenCL: Fixed support for f0
- Can still eliminate some code when f0 or f1 is unused, but that does not work right anyway right now

PetscFE: Added marshalling to the OpenCL implementation

PetscFE: Added a real number type to the OpenCL implementation

PetscFE: OpenCL default back to CPU for non-conforming block sizes

PetscFE: Now cell blocks are settable from options
- Fixed bad merge in 8residual integration

PetscFE: Added OpenCL implementation

PetscFE: Add interface for tile sizes
- Accelerator implementation has multilevel blocking

DMDT FEM: initialize variables due to -Wmaybe-uninitialized

DMDT: move FEM space support to own file dtfe.c

DMDT: use PetscClassId for class ids [needed for 64-bit-indices]

DMPlex+PetscFE: Moved integration functions from DMPlex to PetscFE
- Now PetscFE type indicates the integration method
- Added all machinery for PetscFE types

PetscFE: Fix bug in PetscDualSpaceSetUp_Lagrange()

PetscFE: FEM Jacobian computation working, and now cache default tabulation
- Added PetscFEIntegratJacobianChunk()
- Changed interface in DMPlexComputeJacobianFEM()
- Changed signature of integrateJa

PetscFE: FEM Jacobian computation working, and now cache default tabulation
- Added PetscFEIntegratJacobianChunk()
- Changed interface in DMPlexComputeJacobianFEM()
- Changed signature of integrateJacobianFEM in DMPlex
- Added DMPLEX_JacobianFEM event
- Now PetscFE caches default tabulation

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PetscFE: Large reorganization of FEM dispatch
- WARNING: Now DMPlex and PetscFE have a circular dependence. We need to move the FEM methods to PetscFE
- Changed FEMIntegrateResidualBatch() from to Pe

PetscFE: Large reorganization of FEM dispatch
- WARNING: Now DMPlex and PetscFE have a circular dependence. We need to move the FEM methods to PetscFE
- Changed FEMIntegrateResidualBatch() from to PetscFEIntegrateResidualChunk()
- Changed DMPlexComputeResidualFEM() to use new interface
- Changed signature of f_k and g_kl functions
- Added DMPlexResidualFEM event
- Put PetscQuadrature and PetscCellGeometry
- Moved and changed PetscFEM structure

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DT: Changed PetscDTGaussJacobiQuadrature() to take a PetscQuadrature object