The Cache cleaning code didn't work at all - the thread was never started and resetting the cleaning interval didn't work.  It's better now.  Also, some miscellaneous other cleanup.
The Cache cleaning code didn't work at all - the thread was never started
and resetting the cleaning interval didn't work.  It's better now.  Also,
some miscellaneous other cleanup.


git-svn-id: becfadaebdf67c7884f0d18099f2460615305e2e@840 c76caeb1-94fd-44dd-870f-0c9d92034fc1

slackwareer/javadns,jitsi/dnsjava,tks-dp/dnsjava,draekko/dnsjava,yplo6403/dnsjava,wmudge/dnsjava,ieugen/dnsjava,tks-dp/dnsjava,mohamad-z/dnsjava,dnsjava/dnsjava,yplo6403/dnsjava,draekko/dnsjava,jitsi/dnsjava,mohamad-z/dnsjava,wmudge/dnsjava