[gtkmm] CellRendererText: Add the placeholder_text property.

[Murray Cumming <murrayc src gnome org>]

commit 163ec02d0d77f274263be84cd5cb23564e721ed7
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Aug 30 23:58:04 2012 +0200

    CellRendererText: Add the placeholder_text property.
    
            * gtk/src/cellrenderertext.hg: Wrap the new placeholder-text
    property.

 ChangeLog                   |    7 +++++++
 gtk/src/cellrenderertext.hg |    1 +
 2 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index f99b0f0..d4acb0f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2012-08-30  Murray Cumming  <murrayc murrayc com>
+
+        CellRendererText: Add the placeholder_text property.
+
+        * gtk/src/cellrenderertext.hg: Wrap the new placeholder-text
+	property.
+
 2012-08-29  Murray Cumming  <murrayc murrayc com>
 
 	Widget: Add insert_action_group().
diff --git a/gtk/src/cellrenderertext.hg b/gtk/src/cellrenderertext.hg
index b4de5e7..2ccaa98 100644
--- a/gtk/src/cellrenderertext.hg
+++ b/gtk/src/cellrenderertext.hg
@@ -89,6 +89,7 @@ public:
   _WRAP_PROPERTY("ellipsize-set", bool)
   _WRAP_PROPERTY("single-paragraph-mode", bool)
   _WRAP_PROPERTY("align-set", bool)
+  _WRAP_PROPERTY("placeholder-text", Glib::ustring)
 
   virtual Glib::PropertyProxy_Base _property_renderable();