Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

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

MFC: tcpdump 4.2.1.

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Merge tcpdump-4.1.1.

Merge tcpdump 4.0.0 from the vendor branch.

This commit was generated by cvs2svn to compensate for changes in r162017,
which included commits to RCS files with non-trunk default branches.

Import of tcpdump v3.9.4

Virgin import of tcpdump v3.9.1 (alpha 096) from tcpdump.org