Remove the thread pool code.  We do a much better job now at avoiding thread creation, this code may still have deadlock issues, and using Threads isn't as bad as it used to be,
Remove the thread pool code.  We do a much better job now at avoiding thread
creation, this code may still have deadlock issues, and using Threads isn't as
bad as it used to be,


git-svn-id: becfadaebdf67c7884f0d18099f2460615305e2e@968 c76caeb1-94fd-44dd-870f-0c9d92034fc1

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