Switch server->connect_time from time_t to struct timeval

This means that settings like CONNECT_DELAY and CONNECT_TIMEOUT are compared
against the current time with sub-second resolution.  With the old way, the
delays could be up to a second longer than asked for, which had the effect of
almost doubling the default CONNECT_DELAY value of 1.

include/server.h

@@ -155,7 +155,7 @@ typedef	struct
 	int from_server;
 #endif
 	char *orignick;
-	time_t connect_time;
+	struct timeval connect_time;
 #if defined(HAVE_SSL) && !defined(IN_MODULE)   
 	SSL_CTX* ctx;
 	int enable_ssl;