move Main Loop to a separate clone process

yasnd.c

@@ -22,6 +22,7 @@ char* phone_connection=NULL; // gammu phone connection type, for example: "at"
 char* recipient_number=NULL; // recipient of sms alerts
 bool loop_locked=false ; // flag for locking main loop while config re-reading
 int failures_first=3 ; // count of failures while hosts checking, that triggers first SMS sending
+pid_t mainloop_clone_pid; // pid of clone process, that containt main loop
 
 void log_debug(const char *message,int verbosity)
 {
@@ -158,8 +159,12 @@ void reset_pin(int pin_num)
 	outb (0, LPTPORT);