MSG_CMSG_CLOEXEC is a flag for recvmsg and not recv. Thus rewrite
{udp,tcp}_open to create sockets with SOCK_CLOEXEC. If SOCK_CLOEXEC is not
available, FD_CLOEXEC is set instead.
(cherry picked from commit 3d865a7a)
Signed-off-by: Jean-Paul Saman <jpsaman@videolan.org>

(cherry picked from commit 13e9ce37)

The function dvbpsi_CheckPSISection() correctly checked the TOT table, but
not the TDT table. This patch corrects this ommission.
(cherry picked from commit 18974f23)

examples/dvbinfo/udp.c: Some OS-es do not support SOL_IP and SOL_IPV6, so provide alternatives for them.

Use explicite parenthesis around ? : constructions.

- add boundary checking
- add doxygen comment
- fix some typos.
- fix L1L2MERGE macro

Signed-off-by: Jean-Paul Saman <jpsaman@videolan.org>

The API in version 1.0.0 has changed and the macros dvbpsi_New*/dvbpsi_Delete* have been
deprecated (and removed).

Remove unnecessary #ifndef BSD. netinet/ip.h is a standard header on *BSD. Also, most BSDs don't define "BSD".
Signed-off-by: Jean-Paul Saman <jpsaman@videolan.org>