Increase the timeout for resolv_test from the default (300 seconds) to
450 seconds

This is required on slower network connections, and on older releases
(stable/10 seems to be slower as far as name resolution goes.. not sure
why yet).

Remove an outdated comment in the Makefile from when I was working on
this code over a year ago on github

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division