Get rid of AIX 4.2 compiler warnings.

src/libraries/libisc-new/ChangeLog

+2002-09-21  Per Cederqvist  <ceder@ceder.dyndns.org>
+
+	Get rid of AIX 4.2 compiler warnings.
+	* src/isc_wait.c: Include strings.h.
+	* src/isc_event.c: Include strings.h.
+	* src/intern.h (socklen_t): Use the type that the configure script
+	has found, instead of always using unsigned int.  AIX 4.2 wants an
+	size_t, which is an unsigned long.
+	* configure.in: Check for strings.h.  Check for a socklen_t type
+	that produces no warnings.
+
 2002-09-10  Per Cederqvist  <ceder@ingate.com>
 
 	As expected, uint32_t is not universally available.  SunOS