get rid of threading and daemonize popen_http.py in a simpler and way with pidfile.
get rid of threading and daemonize popen_http.py in a simpler and way with pidfile.

DrXyzzy/smc,sagemathinc/smc,sagemathinc/smc,tscholl2/smc,tscholl2/smc,tscholl2/smc,tscholl2/smc,sagemathinc/smc,DrXyzzy/smc,DrXyzzy/smc,DrXyzzy/smc,tscholl2/smc,sagemathinc/smc