Added support for system-wide hooks.

diff --git a/server/protocol.def b/server/protocol.def
index 38c91c4..7472291 100644
--- a/server/protocol.def
+++ b/server/protocol.def
@@ -2012,6 +2012,7 @@
     thread_id_t    tid;            /* id of thread to set the hook into */
     void*          proc;           /* hook procedure */
     int            unicode;        /* is it a unicode hook? */
+    VARARG(module,unicode_str);    /* module name */
 @REPLY
     user_handle_t  handle;         /* handle to the hook */
 @END
@@ -2032,6 +2033,7 @@
     user_handle_t  handle;         /* handle to the next hook */
     void*          proc;           /* hook procedure */
     int            unicode;        /* is it a unicode hook? */
+    VARARG(module,unicode_str);    /* module name */
 @END
 
 
@@ -2050,4 +2052,5 @@
     void*          proc;           /* next hook procedure */
     int            prev_unicode;   /* was the previous a unicode hook? */
     int            next_unicode;   /* is the next a unicode hook? */
+    VARARG(module,unicode_str);    /* module name */
 @END