Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Merge tcpdump 4.0.0 from the vendor branch.

resolve merge conflicts

MFC after: 1 month

resolve merge conflicts and update for proper build; including:

o print-fr.c returned to code on vendor branch
o remove pmap_prot.h include from print-sunrprc.c
o remove gcc/i386-specific ntoh* write-arounds from tcpdump-stdinc.h

Reviewed by: bms

Merge of tcpdump 3.8.3 from tcpdump.org, with the following caveats:

print-atm.c no longer performs special handling for FORE headers; these
can no doubt be re-added at a later date.

print-fr.c is effectively a no-op.

print-llc.c has had the default_print_unaligned() call removed as
tcpdump no longer defines this function, however the prototype is still
present. Suggest we roll in a diff to use print_unknown_data().

Merge tcpdump 3.7.1

MFC after: 2 weeks

Merge tcpdump 3.6.2

Merge tcpdump 3.5

Support PPPoE.
Add a missing comma to the lcp config options table.

This commit was generated by cvs2svn to compensate for changes in r39297,
which included commits to RCS files with non-trunk default branches.

Virgin import of LBL tcpdump v3.4