sysmodule.c: calling sys.settrace() or sys.setprofile() without

arguments crashed in INCREF() calls which should be XINCREF() calls.

timemodule.c: fix for SEQUENT port (sys/select, struct timezone) by
Jaap Vermeulen

xxobject.c: include modsupport.h

Objects/xxobject.c

@@ -35,6 +35,7 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 /* Xx objects */
 
 #include "allobjects.h"
+#include "modsupport.h"		/* For getargs() etc. */
 
 typedef struct {
 	OB_HEAD