Misc build system fixes

This minor release fixes a couple of issues found in the build system after the major release 0.7 of HiOp.

What's Changed

• fixing memory leaks in cuSolver by @kswirydo in #554
• moves pnnl_cleanup to .pre stage and removes files based on age by @jdmacam in #555
• Condensed/normaleqn linear system without CUDA/RAJA by @nychiang in #557
• Fix mds raja example for raja without GPU by @nychiang in #558
• git submodule fixes by @cnpetra in #561
• Misc build system fixes related to HIOP_SPARSE by @cnpetra in #560
• Disable openmp when raja is not used by @nychiang in #562
• Pre stage pipeline fix by @ryandanehy in #564
• New tag release - 0.7.1 by @cnpetra in #565

New Contributors

• @jdmacam made their first contribution in #555
• @ryandanehy made their first contribution in #564

Full Changelog: v0.7.0...v0.7.1