johnsonjh/OpenVi 7.4.23 on GitHub

Changes since 7.3.22

OpenBSD 7.4 tagged; bumping OpenBSD major version part to 7.4
Bump OpenBSD date synchronization version part to 06/23/2023
Remove unused __cur_db variable in Berkeley DB code; ok millert@
Spelling fixes (in comments only) for regex from Paul Tagliamonte
Remove vestigial ? case from xinstall top-level getopt loop; prompted by dlg@, help from dlg@, millert@; ok naddy@ millert@ dlg@
Packaging improvements from @jswank to honor DESTDIR to support relocatable installation, to use relative symlinks for view and ex programs, and to not create /var/tmp/vi.recover during installation