ex - better namespacing of petsc ex headers

Merge pull request #885 from CEED/jeremy/min-petsc

PETSc - set minimum version for examples

examples/petsc: avoid namespace collision in convenience headers

Merge pull request #807 from CEED/jed/petsc-assemble-coo

PETSc examples: assemble matrix analytically instead of coloring

H(div) basis constructor (#878)

* backends/interface: added H(div) basis constructor

* tests: CEED_EVAL_INTERP/DIV tested for H(div) basis.

* Update interface/ceed-basis.c

Co-authored-by:

H(div) basis constructor (#878)

* backends/interface: added H(div) basis constructor

* tests: CEED_EVAL_INTERP/DIV tested for H(div) basis.

* Update interface/ceed-basis.c

Co-authored-by: Jed Brown <jed@jedbrown.org>

* Update interface/ceed-basis.c

Co-authored-by: Jed Brown <jed@jedbrown.org>

* Update interface/ceed-basis.c

Co-authored-by: Jed Brown <jed@jedbrown.org>

* Update interface/ceed-basis.c

Co-authored-by: Jed Brown <jed@jedbrown.org>

* Update interface/ceed-basis.c

Co-authored-by: Jed Brown <jed@jedbrown.org>

* interface/ceed-basis.c: delete [-1,1] for non-tensor basis constructor

* Update interface/ceed-basis.c

Co-authored-by: Jed Brown <jed@jedbrown.org>

* include/ceed: added CEEDFESpace enum and used it at ceed-basis.c

* tests: added t330-basis.out and changed xhat-->x_hat

* Changed name convention for CeedElemTopology and CeedFESpace enum.

* make style

* interface/ceed-basis.c: Added FE space/topology of the basis to CeedBasisView function

* tests/output: update ...basis.out file

* Changed CEED_FE_TOPO_ ==> CEED_TOPOLOGY_

* backends/ref: delete CeedBasisApplyHdiv_Ref

* Update interface/ceed-basis.c

Co-authored-by: Jeremy L Thompson <jeremy@jeremylt.org>

* Update interface/ceed-basis.c

Co-authored-by: Jeremy L Thompson <jeremy@jeremylt.org>

* Update include/ceed-impl.h

Co-authored-by: Jeremy L Thompson <jeremy@jeremylt.org>

* interface/ceed-bassi.c: update CeedBasisView

* deleted L2 and H(curl) FE spaces

* minor - update output file

* minor - update output file

* style - consistency with main

Co-authored-by: Jed Brown <jed@jedbrown.org>
Co-authored-by: Jeremy L Thompson <jeremy@jeremylt.org>

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petsc - drop mat assembly by coloring

examples/petsc/multigrid: add event for assembly

build/solids: fix order/uninitialized variable

solids - add libCEED coarse level assembly

examples/petsc/multigrid: assemble matrix analytically instead of coloring

This currently requires development PETSc to correctly handle negative
indices through the LocalToGlobalMapping.

petsc - set minimum version for examples

Add launch bounds to hip-gen operator kernel

Merge pull request #883 from CEED/jeremy/safer-basis-copy

basis - handle null pointers to basis matrices

basis - handle null pointers to basis matrices

Merge pull request #882 from CEED/jeremy/xsmm-1.17

CI - update to xsmm 1.17

xsmm - add compatibility for xsmm > 1.17

ci - update to xsmm 1.17

Merge pull request #879 from CEED/jed/doxygen-cleanup

Doxygen cleanup

Merge pull request #880 from CEED/jrwrigh/doc-fluids

doc(fluids): Correct vector name in Tau dropdown

doc(fluids): Correct vector name in Tau dropdown

Otherwise $$\hat{\bm{n}}$$ is never defined.

Makefile: quiet Doxygen output so warnings are more noticeable

Doxygen: don't attempt to generate DOT graphs

Doxygen: doxygen -u Doxyfile to version 1.9.3

Deprecations and skip Python source.

Doxygen: skip tests and examples

Doxygen is only used for the public C API, not for markdown (we use
Sphinx markdown) or examples, etc.

doc: no @return for void