Log message:
Add SHA512 digests for distfiles for security category

Problems found locating distfiles:
	Package f-prot-antivirus6-fs-bin: missing distfile fp-NetBSD.x86.32-fs-6.2.3.tar.gz
	Package f-prot-antivirus6-ws-bin: missing distfile fp-NetBSD.x86.32-ws-6.2.3.tar.gz
	Package libidea: missing distfile libidea-0.8.2b.tar.gz
	Package openssh: missing distfile openssh-7.1p1-hpn-20150822.diff.bz2
	Package uvscan: missing distfile vlp4510e.tar.Z

Otherwise, existing SHA1 digests verified and found to be the same on
the machine holding the existing distfiles (morden).  All existing
SHA1 digests retained for now as an audit trail.

Log message:
Uses old-style exception syntax.

Log message:
YubiAuth provides a user management system which can be used as a
base for other systems. It allows the creation of users, which can
be authenticated by username, password, and optionally a YubiKey
OTP.
Aside from providing a user authentication backend, YubiAuth allows
storing and retrieving arbitrary key-value attributes for each user
as well as each YubiKey.