Include forward.h instead of declaring stuff in proc.h
diff --git a/proc.h b/proc.h
index 68054b3..c37935b 100644
--- a/proc.h
+++ b/proc.h
@@ -35,9 +35,7 @@
 #include "dict.h"
 #include "sysdep.h"
 #include "callback.h"
-
-struct library;
-struct breakpoint;
+#include "forward.h"
 
 struct event_handler {
 	/* Event handler that overrides the default one.  Should