Log Message:
Update news/trn to trn-4.77. Patches from Dario Niedermann in PR pkg/50154

pkgsrc changes:
- patches/patch-a[ab] are no longer needed

Changes:
- Added IPv6 support to get_tcp_socket() using a ever-so-slightly-tweaked
  patch from Olaf 'Rhialto' Seibert.
- Misc bug fixes and improvements