PETSc XZHermiteSpline #3787

Job	Run time
CUDA	12m 34s
Fedora	19m 57s
CMake, PETSc unreleased, ADIOS2	25m 22s
Default options, Ubuntu 20.04	17m 29s
Optimised, static	21m 0s
Debug, shared	24m 48s
Shared, release, Ubuntu 20.04	17m 42s
Shared, OpenMP, 3D metrics	14m 30s
CMake, new PETSc	17m 49s
Coverage	13m 29s
	3h 4m 40s

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