[gtksourceview] Temporary fix for 'make distcheck'

[Sébastien Wilmet <swilmet src gnome org>]

commit 345902fcb0b7cfa18857c82af46b1fd21e9cae1e
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Mon May 25 12:17:42 2015 +0200

    Temporary fix for 'make distcheck'
    
    Intltool has a bug with Automake 1.15:
    https://bugs.launchpad.net/intltool/+bug/1117944
    
    This commit is just a temporary fix, it can be reverted when the bug is
    fixed in intltool.

 po/POTFILES.skip |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index 6d0663f..39fa32a 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -1,5 +1,6 @@
 data/styles/testdark.xml
 docs/reference/lang-tutorial.xml
+sub/docs/reference/lang-tutorial.xml
 tests/test-completion.ui
 tests/test-search.ui
 tests/test-widget.ui