add IN_EXCL_UNLINK to sys/inotify.h

include/sys/inotify.h

@@ -39,6 +39,7 @@ struct inotify_event {
 
 #define IN_ONLYDIR       0x01000000
 #define IN_DONT_FOLLOW   0x02000000
+#define IN_EXCL_UNLINK   0x04000000
 #define IN_MASK_ADD      0x20000000
 
 #define IN_ISDIR         0x40000000