[gtksourceview] Generate and distribute INSTALL file

[Sébastien Wilmet <swilmet src gnome org>]

commit fabc5dbc210326b3144c9c170fceb4ad48d17c4a
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Thu Oct 1 20:09:23 2015 +0200

    Generate and distribute INSTALL file
    
    With the gnu strictness, the INSTALL file is generated, but a ChangeLog
    file must be present.

 ChangeLog    |    1 +
 configure.ac |    2 +-
 2 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..2c7e4d0
--- /dev/null
+++ b/ChangeLog
@@ -0,0 +1 @@
+See the 'NEWS' file or the version control system's log.
diff --git a/configure.ac b/configure.ac
index 80534a4..138c441 100644
--- a/configure.ac
+++ b/configure.ac
@@ -46,7 +46,7 @@ AC_CONFIG_SRCDIR([gtksourceview/gtksourcebuffer.h])
 AC_CONFIG_HEADER([config.h])
 AC_CONFIG_MACRO_DIR([m4])
 
-AM_INIT_AUTOMAKE([1.13 tar-ustar dist-xz no-dist-gzip -Wno-portability foreign])
+AM_INIT_AUTOMAKE([1.13 tar-ustar dist-xz no-dist-gzip -Wno-portability gnu])
 AM_MAINTAINER_MODE([enable])
 
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])