net/olsrd: Update from 0.9.5 to 0.9.6.1

[joneum]

Summary

net/olsrd: Update from 0.9.5 to 0.9.6.1

*While here switch to DISTVERSION

PR: 223411
Submitted by: Nikola Kolev <[e-mail]> (maintainer)

Test Plan

~...net/olsrd: portlint -AC [19:44:27]
WARN: Makefile: for new port, make $FreeBSD$ tag in comment section empty, to make SVN happy.
WARN: /usr/home/joneum/dev/ports/net/olsrd/pkg-message: possible use of absolute pathname "/etc/rc.conf".
WARN: /usr/home/joneum/dev/ports/net/olsrd/pkg-message: seems to have unnecessary blank lines at the last part.
0 fatal errors and 3 warnings found.

poudriere testport:

10.3-amd64
10.3-i386
10.4-amd64
10.4-i386
11.1-amd64
11.1-i386
12.0-CURRENT r325045 amd64
12.0-CURRENT r325045 i386

[tcberner]

looks good