monitor: Export QDict header

Command handlers will have to use QDict functions, so export
qdict.h through monitor.h.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/monitor.h b/monitor.h
index f6a43c0..c7d2d0b 100644
--- a/monitor.h
+++ b/monitor.h
@@ -3,6 +3,7 @@
 
 #include "qemu-common.h"
 #include "qemu-char.h"
+#include "qdict.h"
 #include "block.h"
 
 extern Monitor *cur_mon;