[goffice] Exclude goffice-debug.h from documentation

[Jean BrÃfort <jbrefort src gnome org>]

commit bcdef44ca1e6fdff96be9b8cb39571f1554e1852
Author: Jean Brefort <jean brefort normalesup org>
Date:   Tue Dec 4 07:56:31 2012 +0100

    Exclude goffice-debug.h from documentation

 docs/reference/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/Makefile.am b/docs/reference/Makefile.am
index a42865f..d241560 100644
--- a/docs/reference/Makefile.am
+++ b/docs/reference/Makefile.am
@@ -24,6 +24,7 @@ IGNORE_HFILES=	\
 		goffice-config.h        		\
 		goffice-features.h      		\
 		goffice-paths.h				\
+		goffice-debug.h				\
 		io-context-priv.h       		\
 		go-app.h       				\
 		go-object.h       			\