record: add/fix include guards where missing/broken

Signed-off-by: Mike Gelfand <mikedld@mikedld.com>

record/set.h

@@ -51,6 +51,9 @@ from The Open Group.
     The following types and functions/macros define the ADT.
 */
 
+#ifndef XSERVER_SET_H
+#define XSERVER_SET_H
+
 /* an interval of set members */
 typedef struct {
     CARD16 first;
@@ -133,3 +136,5 @@ int RecordSetMemoryRequirements(RecordSetInterval * /*pIntervals */ ,
 	    process interval;
 	}
 */
+
+#endif /* XSERVER_SET_H */