junit - add cuda/ref exception to t318

junit - set CEED_ERROR_HANDLER to exit

Merge pull request #758 from CEED/jeremy/codecov

Small Code Coverage Updates

codecov - minor updates

op - impl restriction only identity operators for CPU, error on code gen GPU backends

context - add QFunctionContextTakeData to silence docs warning about missing ref

vec - add CeedVectorScale

minor - typo

python - add pointwisemult and axpy

Merge branch 'jeremy/vec-ops' [PR #744]

* jeremy/vec-ops:
vec - add tests for ceed compatibility for AXPY and PointwiseMult
vec - add PointwiseMult and AXPY convenience functions

Merge pull request #741 from CEED/jed/python-test-docs

Fix python test docs

vec - add PointwiseMult and AXPY convenience functions

tests - move tests to python dir

tests/python - add TEST_OPTS and use in GitHub Action

tests/python: add convenience targets to makefile

tests/python: fix file names

interface - add reference copying functions
Co-authored-by: Jed Brown <jed@jedbrown.org>

typo - fix spelling

style - updating C variable style

interface - add help option for CeedInit and function to access arrays of resources + priorities

codecov - add exclusion markers for t006/7

interface - improved resource matching check

tests/python: fix double free remnant after switch to context manager

Install install backend headers under include/ceed/

This makes it possible to distribute source plugins that provide
additional backends. It's also used in MFEM, perhaps temporarily.

Deprecate ceed

Install install backend headers under include/ceed/

This makes it possible to distribute source plugins that provide
additional backends. It's also used in MFEM, perhaps temporarily.

Deprecate ceed-backend.h, which was not previously installed, but some
users accessed it from an in-place build.

Also install CUDA and HIP headers that allow users to provide CUfunction
and hipFunction_t.

Co-authored-by: Jeremy L. Thompson <jeremy.thompson@colorado.edu>
Requested-by: Andrew T. Barker <barker29@llnl.gov>

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Full assembly of CeedOperator (#712)

* Add CeedOperatorLinearFullAssemble() to explicitly assemble a CeedOperator

The output format is a stream of (row, column, value) triples, which client
code

Full assembly of CeedOperator (#712)

* Add CeedOperatorLinearFullAssemble() to explicitly assemble a CeedOperator

The output format is a stream of (row, column, value) triples, which client
code can use to assemble a sparse matrix by adding the values in the
appropriate places.

* Add full assembly test for triangular mesh, t563-operator.c, which is analogous to t536-operator.c

* assembly: change interface to separate nonzero structure from values

* assembly: add potential backends for CeedOperatorLinearAssemble, CeedOperatorLinearAssemblySymbolic

* assembly: use CeedMatrixMultiply() instead of hand-rolled duplicated code

This also involves switching some arrays from column-major ordering to
row-major ordering.

* Remove CeedMatrixMultiply from ceed-impl.h because it is already in ceed-backend.h

* assembly: modify use of fallback resource

* operator - use new error codes in full assembly

* style - minor

* operator - switch default fallback to none

* operator - fix fallback for full assembly

* operator - fix fallback usage

* operator - fix fallback for digonal assembly

* avx - revert bug

* avx - revert bug

Co-authored-by: jeremylt <thompson.jeremy.luke@gmail.com>

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