Draft: main/apr-util: properly build with ndbm
5f13bd26 (main/apr-util: remove dbd backend and subpackage, 2020-09-14) switched the dbm backend to ndmb, but ndbm.h was not present, so the build silently ignored it and it was built without dbm support.
This results in Apache throwing the error:
(20019)DSO load failed: AH00576: The DBM driver could not be loaded
Add gdbm-dev and specify --with-ndbm
to fix this.
Fixes #13112
Edited by Kevin Daudt