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

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

MFH (r237568, r255422, r255460, r255766, r255767, r255774, r255829,
r256126, r257954, r261320, r261499, r263691, r263712): upgrade to
OpenSSH 6.6p1 via 6.3p1, 6.4p1 and 6.5p1.

Differences relative to head:

- No DNSSEC support since stable/9 does not have LDNS
- Sandboxing off by default, and uses rlimit instead of Capsicum
- ED25519 moved to the bottom of the order of preference to avoid
"new public key" warnings

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

Approved by: re (implicit)

Remove svn:keywords except on files that need it. This makes diffs
against the vendor branch much more readable.

Consistently set svn:eol-style.

This commit was generated by cvs2svn to compensate for changes in r162852,
which included commits to RCS files with non-trunk default branches.

Vendor import of OpenSSH 4.4p1.

Vendor import of OpenSSH 4.3p1.

Vendor import of OpenSSH 4.2p1.

Vendor import of OpenSSH 3.9p1.

Vendor import of OpenSSH 3.8p1.

Don't output the terminating '\0' (already fixed in OpenSSH CVS)

Vendor import of OpenSSH 3.7.1p2.

Vendor import of OpenSSH-portable 3.6.1p1.