[gegl] rotte: add ui-meta for unit

[Øyvind Kolås <ok src gnome org>]

commit 923e8e71d7ac5f388c99c2f637da3c4fb4900caa
Author: Øyvind Kolås <pippin gimp org>
Date:   Sat Jul 8 21:29:02 2017 +0200

    rotte: add ui-meta for unit

 operations/transform/rotate.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/operations/transform/rotate.c b/operations/transform/rotate.c
index f824483..6d39937 100644
--- a/operations/transform/rotate.c
+++ b/operations/transform/rotate.c
@@ -26,6 +26,7 @@ property_double (degrees, _("Degrees"), 0.0)
     description(_("Angle to rotate (counter-clockwise)"))
     value_range (-720.0, 720.0)
     ui_range (-180.0, 180.0)
+    ui_meta ("unit", "degree")
 
 #else