Maintenance of openssh pacakge:

1. Add support for check and create ECDSA host key for SSH protocol
  version 2.

2. Disable use of strnvis(3) on NetBSD.  NetBSD current after 2011/03/12
  has strnvis(3), but it has different argument from OpenBSD (and other
  system).

Bump PKGREVISION.

(taca)