[pygtksourceview] Clean autogenerated Changelog for dist files

[Gian Mario Tagliaretti <gianmt src gnome org>]

commit b1dfd6a704f740a6397181e67413be18e1608615
Author: Gian Mario Tagliaretti <gianmt gnome org>
Date:   Mon Aug 17 23:53:36 2009 +0200

    Clean autogenerated Changelog for dist files

 Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 57e3bde..862b3fc 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -15,6 +15,8 @@ EXTRA_DIST =				\
 	pygtksourceview-2.0.pc.in	\
 	ChangeLog-pre-git
 
+BUILT_EXTRA_DIST = ChangeLog
+
 defsdir = $(datadir)/pygtk/2.0/defs
 defs_DATA = gtksourceview2.defs