libpcap: upgrade 1.10.2 -> 1.10.3

libpcap: upgrade 1.10.2 -> 1.10.3

Changelog:
============
Source code:
   Sort the PUBHDR variable in Makefile.in in "ls" order.
   Fix typo in comment in pflog.h.
   Remove two no-longer-present files from .gitignore.
   Update code and comments for handling failure to set promiscuous
     mode based on new information.
Building and testing:
   install: Fixed not to install the non-public pcap-util.h header.
   pcap-config: add a --version flag.
   Makefile.in: Add some missing files in the distclean target.

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>