Quash a load of compile warnings

Kevin Lyda writes:
I enclose the following patch which removes all but three of the warnings.  i
don't have any non-linux systems handy to test a fix to the round() function.
but having it return a double should be fine.

It doesn't actually fix anything, it just shuts up -Wall, so it's certainly an
optional type of patch.

logging.c

@@ -116,7 +116,7 @@ LOG_Line_Function(LOG_Severity severity, LOG_Facility facility, const char *form
 
 /* ================================================== */
 
-volatile void
+void
 LOG_Fatal_Function(LOG_Facility facility, const char *format, ...)
 {
   char buf[2048];