Minor build fixes, includes WITH_DEBUG builds
- under WITH_DEBUG=yes builds, avoid renaming the libraries with _d suffix. (else it breaks packaging, and we don't want separate lib names) [1]
- while here, avoid creating symlinks from cmake, this causes staging violations due to cmake bug #17340, (poudriere testport) see https://gitlab.kitware.com/cmake/cmake/issues/17340
- while here, fix "make test" target - it is a left over from 2.3's gmake build. Use ctest instead.
No PORTREVISION bump necessary because each and every fixed bug would
cause a broken build and no install.
PR: 243274 [1]
Reported by: Marcin Cieślak [1]