[dsc] DSC release 2.5.1

[Jerry Lundström]

Hi all,

Various compatibility issues and a possible runtime bug, related to
pcap-thread, fixed.

  https://www.dns-oarc.net/files/dsc/dsc-2.5.1.tar.gz
  bae45e2d4722c6064902dc802149a6f4f3531e7145792d2827ce58f6cc463ff3

Packages are available at:

  https://dev.dns-oarc.net/packages/

Commits:

5ed03e3 Compat for OS X
8605759 Fix compiler warnings
5fbad26 Update pcap-thread to v2.1.2
47ed110 Update pcap-thread to v2.1.1

Cheers,
Jerry