[gtk-doc] make: update ignore files

[Stefan Sauer <stefkost src gnome org>]

commit ed1e50be439175847852c0cc992d76565b1e3106
Author: Stefan Sauer <ensonic users sf net>
Date:   Wed May 24 22:25:00 2017 +0200

    make: update ignore files

 Makefile.am |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 6624e10..47ec11b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -79,10 +79,13 @@ CLEANFILES = \
   gtk-doc.flat.make \
   gtkdoc-checkc \
   gtkdoc-depscanc \
+  gtkdoc-fixxrefc \
+  gtkdoc-mkdbc \
   gtkdoc-mkhtmlc \
   gtkdoc-mkmanc \
   gtkdoc-mkpdfc \
   gtkdoc-rebasec \
+  gtkdoc-scangobjc \
   gtkdoc/__init__.pyc \
   gtkdoc/check.pyc \
   gtkdoc/common.pyc \