* Services now use envdir to set up environment variables such
as $IP and $CACHESIZE, so outside tools can read and edit the
variables.
* dnscache discards non-recursive queries. There's a new dnsqr
tool to send recursive queries to dnscache.
* dnscache works around the Linux O_NONBLOCK kernel bug.
- remove PKGNAME, the distfile now has the correct name
- re-anchor patches
- add dnsqr to PLIST
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