- Ensure cmake builds also apply CPPFLAGS flags for hardening to fully work
  https://salsa.debian.org/mariadb-team/mariadb-10.4/-/commit/fc4f33cf40d0a10ef5d1992accd2af734ba96356
- Install Ubuntu Apport files in the same way with same filename.
- MDEV-21705: Build flags to keep WolfSSL from crashing
- Clean away sql-bench from packaging immediately after build step.
- Delete private files from libraries so they don't get shipped in the -dev
  packages.