[dsc] dsc v2.9.1 released!

[Jerry Lundström]

Hi all,

This release fixes a few bugs, removes a lot of the debug messages about
DNSTAP and removes GeoIP from openSUSE/SLE packages as it has been
deprecated on those platforms.

  <https://www.dns-oarc.net/files/dsc/dsc-2.9.1.tar.gz>
  459ac9cedb3ca9a14840b86252a689c0363a3b037029b06bca7ccfc19aeb7f41

Packages are available at: <https://dev.dns-oarc.net/packages/>

NOTE: DNSTAP support is enabled in packages as of v2.9.0!

Changes:
- `daemon`: Fix bug with listening for SIGINT when in foreground mode
- `dnstap`:
  - Fix #217: Unlink UNIX socket on exit if successfully initiated
  - Fix startup bug, `exit()` if unable to initialize
  - Fix #220:
    - Remove/hide a lot of debug messages and the printing of the
      DNSTAP message
    - Clarify a lot of the info and error messages
    - Prefix all DNSTAP related messages with `DNSTAP: `
- Fix compile warnings and include headers when GeoIP is missing
- `asn_indexer`: Fix bug, said unknown IPv4 when it was IPv6

Commits:
08bad5b DNSTAP debug
1232264 LGTM
589ea7a GeoIP, asn indexer
4fea0d2 sigint, DNSTAP UNIX socket, DNSTAP init

Cheers,
Jerry