Don't include <sys/time.h> when it isn't available.

src/libraries/libisc-new/ChangeLog

+2002-08-20  Per Cederqvist  <ceder@ceder.dyndns.org>
+
+	Don't include <sys/time.h> when it isn't available.
+	* configure.in: Check for <sys/time.h>.
+	* src/isc_event.c: Fix include guards for <time.h> and <sys/time.h>.
+	* src/isc_socket.c: Ditto.
+	* src/isc_wait.c: Ditto.
+
 2002-08-10  Per Cederqvist  <ceder@ceder.dyndns.org>
 
 	Check for ar. (Bug 523).