Add definitions for session change notifications.

include/winsvc.h

diff --git a/include/winsvc.h b/include/winsvc.h
index 44e0528..0b43aaf 100644
--- a/include/winsvc.h
+++ b/include/winsvc.h
@@ -52,6 +52,7 @@
 #define SERVICE_CONTROL_DEVICEEVENT           0x0000000B
 #define SERVICE_CONTROL_HARDWAREPROFILECHANGE 0x0000000C
 #define SERVICE_CONTROL_POWEREVENT            0x0000000D
+#define SERVICE_CONTROL_SESSIONCHANGE         0x0000000E
 
 /* Service State */
 #define SERVICE_STOPPED          0x00000001
@@ -70,6 +71,7 @@
 #define SERVICE_ACCEPT_NETBINDCHANGE         0x00000010
 #define SERVICE_ACCEPT_HARDWAREPROFILECHANGE 0x00000020
 #define SERVICE_ACCEPT_POWEREVENT            0x00000040
+#define SERVICE_ACCEPT_SESSIONCHANGE         0x00000080
 
 /* Service Control Manager Object access types */
 #define SC_MANAGER_CONNECT            0x0001