AM_EXTRA_RECURSIVE_TARGETS works since automake 1.13. (CentOS 6 has 1.11.)

Change code coverage macro to support both clang and gcc.

absolute paths in tests-extra

Allow functional tests execution outside tests-extra directory

See merge request !500

Added missing dependency on FreeBSD

Added missing flags on FreeBSD.

See merge request !498

udp-pktinfo: fix bsd recvdstaddr with socket bound to concrete address

Fix problem with IP_RECVDSTADDR on BSD.

BSD has problem answering to socket bounded to concrete address (not INADDR_ANY) when provided IP_SENDSRCADDR in ancillary data. This problem is only for IPv4. 

See merge request !496

nettle_len improvement



See merge request !493

> Conditionals written like this:
>
>      #if defined BUFSIZE && BUFSIZE >= 1024
>
> can generally be simplified to just #if BUFSIZE >= 1024, since if BUFSIZE is not defined, it will be interpreted as having the value zero.

udp answer from correct address

Send answer from correct address for UDP socket.

Works for IPv4 and IPv6 on Linux, BSD and MacOS.

How to reproduce and test this behavior:
`dig -b ip_address @127.0.0.1 ...`

Solves #277 Multi-NIC is not working properly.


See merge request !492