[gimp] Bug 750920 - Show commit number in About dialog

[Michael Natterer <mitch src gnome org>]

commit 4161ea9cd7d02391ba498826d19282a0b3da7d7a
Author: Michael Natterer <mitch gimp org>
Date:   Fri Aug 21 10:26:30 2015 +0200

    Bug 750920 - Show commit number in About dialog
    
    Done.

 app/dialogs/about-dialog.c |   20 +++++++++++++++++---
 1 files changed, 17 insertions(+), 3 deletions(-)
---
diff --git a/app/dialogs/about-dialog.c b/app/dialogs/about-dialog.c
index 70dd15d..7fbf03c 100644
--- a/app/dialogs/about-dialog.c
+++ b/app/dialogs/about-dialog.c
@@ -39,6 +39,8 @@
 #include "about-dialog.h"
 #include "authors.h"
 
+#include "git-version.h"
+
 #include "gimp-intl.h"
 
 
@@ -599,9 +601,21 @@ about_dialog_timer (gpointer data)
 static void
 about_dialog_add_unstable_message (GtkWidget *vbox)
 {
-  GtkWidget *label;
-
-  label = gtk_label_new (_("This is an unstable development release."));
+  GtkWidget   *label;
+  const gchar *version;
+  gchar       *short_hash;
+  gchar       *text;
+
+  version = GIMP_GIT_VERSION;
+  short_hash = g_strdup (version + strlen (version) - 7);
+  text = g_strdup_printf (_("This is an unstable development release\n"
+                            "commit %s"), short_hash);
+  label = gtk_label_new (text);
+  g_free (text);
+  g_free (short_hash);
+
+  gtk_label_set_selectable (GTK_LABEL (label), TRUE);
+  gtk_label_set_justify (GTK_LABEL (label), GTK_JUSTIFY_CENTER);
   gimp_label_set_attributes (GTK_LABEL (label),
                              PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
                              -1);