Added idl file for the System Event Notifcation Services API
(SENSAPI).

include/Makefile.in

diff --git a/include/Makefile.in b/include/Makefile.in
index 9d45e4d..44612e2 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -26,6 +26,7 @@
 	propidl.idl \
 	pstore.idl \
 	richole.idl \
+	sensevts.idl \
 	servprov.idl \
 	shldisp.idl \
 	shobjidl.idl \