[gtkmm-documentation] Remove a drawable.h include, to fix the build.

[Murray Cumming <murrayc src gnome org>]

commit 152f6edd3ac87b80e901e4af28f8042bccc4d2ef
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Dec 17 13:30:37 2010 +0100

    Remove a drawable.h include, to fix the build.
    
    * examples/book/custom/custom_widget/mywidget.cc: Do not include
    gdkmm/drawable.h because it no longer exists.

 ChangeLog                                      |    7 +++++++
 examples/book/custom/custom_widget/mywidget.cc |    1 -
 2 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 9398318..e95f5c8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2010-12-17  Murray Cumming  <murrayc murrayc com>
+
+	Remove a drawable.h include, to fix the build.
+
+	* examples/book/custom/custom_widget/mywidget.cc: Do not include 
+	gdkmm/drawable.h because it no longer exists.
+
 2010-12-14  Murray Cumming  <murrayc murrayc com>
 
 	Fix the build with the latest gtkmm from git master.
diff --git a/examples/book/custom/custom_widget/mywidget.cc b/examples/book/custom/custom_widget/mywidget.cc
index a1f7a45..4773b18 100644
--- a/examples/book/custom/custom_widget/mywidget.cc
+++ b/examples/book/custom/custom_widget/mywidget.cc
@@ -17,7 +17,6 @@
  */
 
 #include "mywidget.h"
-#include <gdkmm/drawable.h>
 #include <gdkmm/general.h>  // for cairo helper functions
 #include <iostream>
 //#include <gtk/gtkwidget.h> //For GTK_IS_WIDGET()