Import the <netinet/in.h> from current FreeBSD. This allows to build
some current software (e.g. libressl).
Add legacy support like
* prototype for in_cksum(),
* IPPORT_USERRESERVED,
* deprecated IPCTL_RT* defines,
* ip_fw_chk_t and ip_fw_ctl_t,
* ip_nat_... (IP NAT hooks), and
* IP_NAT option for get/setsockopt()
to new <rtems/rtems_netinet_in.h>.
Script does what is expected and tries to do it as
smartly as possible.
+ remove occurrences of two blank comment lines
next to each other after Id string line removed.
+ remove entire comment blocks which only exited to
contain CVS Ids
+ If the processing left a blank line at the top of
a file, it was removed.
* libcsupport/include/sys/ioccom.h, libnetworking/kern/uipc_socket2.c,
libnetworking/net/ethernet.h, libnetworking/net/if.h,
libnetworking/net/if_ethersubr.c, libnetworking/net/if_ppp.c,
libnetworking/net/if_pppvar.h, libnetworking/net/ppp_tty.c,
libnetworking/net/pppcompress.c, libnetworking/net/slcompress.c,
libnetworking/netinet/in.h, libnetworking/netinet/ip_icmp.c,
libnetworking/netinet/tcp.h, libnetworking/netinet/tcp_seq.h,
libnetworking/sys/protosw.h, libnetworking/sys/socketvar.h: Remove
warnings. Most of the warnings were 16/32 bit integer sizing issues.
Some constants had L appended, some had casts add, some types were
changed to reflect a bit width requirement.
