[gegl] build: add tools/csourcetostring.py to EXTRA_DIST

[Øyvind Kolås <ok src gnome org>]

commit 244dfb130f8f6377c211bc5ae95b3bca700cab6b
Author: Øyvind Kolås <pippin gimp org>
Date:   Wed Feb 3 16:21:55 2016 +0100

    build: add tools/csourcetostring.py to EXTRA_DIST
    
    Fixing bug #761503

 tools/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/tools/Makefile.am b/tools/Makefile.am
index e666771..5c4f2f1 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -2,6 +2,7 @@
 
 EXTRA_DIST = \
        xml_insert.sh \
+    csourcetostring.py \
        gobj2dot.rb
 
 AM_CPPFLAGS = \