[dsc] DSC Release 2.2.0

[Jerry Lundström]

Hi all,

Some big changes in this release are the removal of the C++ configure
parser library Hapy and the addition of pcap-thread to (hopefully)
handle capturing packet in a correct and efficient way.

    https://www.dns-oarc.net/files/dsc/dsc-2.2.0.tar.gz
    94e90fc30e638db3052a821432838637e6fd377f488a66296692bffa68101924

For Debian and Ubuntu packages please visit:

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

With the addition of pcap-thread comes new runtime options:
- `-m` sets monitor mode on interfaces
- `-i` sets immediate mode on interfaces
- `-T` disable the usage of threads in pcap thread

Bugfixes:
- d95190a fixes a small memory leak in `Pcap_init()` and a possible
  bug where `-p` might never been used because of not being declared
  external.
- 55e1056 added check for `netinet/ip_compat.h` for use in
  `src/pcap_layers/pcap_layers.c`.

Commits:

0a1ce91 Fix coverity issues
5a1d410 Delete useless line (related to mayasd#84)
443db3e Check if the file was previously linked but not yet unlinked
        (Tim CLERC.IM)
02a7621 Fix #82: Oops, `pcap_thread_set_filter()` had changed during
        development and missed this
2a8aa29 Move definition of token struct inside and changed name to not
        conflict on FreeBSD
43da964 Fix #9: Implement conf parser in C and remove dependency of
        Hapy and C++
9f46f0d Update pcap thread to version 1.1.1
d95190a Use pcap thread, new options `-miT` and possible bugfix for
        `-p` and a small memory leak fix
55e1056 Fix #77: Check for netinet/ip_compat
4e120f9 Fix travis script, only expand dir.

Cheers,
Jerry