[gimp-perl] Add gimp_display_name.

[Ed J <edj src gnome org>]

commit 8cafd6d15520d183918bab8870c03e599a6dde93
Author: Ed J <edj src gnome org>
Date:   Sat May 24 18:19:47 2014 +0100

    Add gimp_display_name.

 Gimp/Lib.xs |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/Gimp/Lib.xs b/Gimp/Lib.xs
index 5ba6cdc..0cdf2d6 100644
--- a/Gimp/Lib.xs
+++ b/Gimp/Lib.xs
@@ -2250,6 +2250,9 @@ _gimp_progress_init (message)
 DISPLAY
 gimp_default_display()
 
+const char *
+gimp_display_name()
+
 # functions using different calling conventions:
 #void
 #gimp_channel_get_color(channel_ID, red, green, blue)