Further version changes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@18055 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/gtk/install.txt

@@ -1,4 +1,4 @@
-wxWindows 2.3 for GTK installation
+wxWindows 2.4 for GTK installation
 ----------------------------------
 
 IMPORTANT NOTE:
@@ -11,7 +11,7 @@ IMPORTANT NOTE:
 
   When sending bug reports tell us what version of wxWindows you are
   using (including the beta) and what compiler on what system. One
-  example: wxGTK 2.3.4, gcc 2.95.4, Redhat 6.2
+  example: wxGTK 2.4.0, gcc 2.95.4, Redhat 6.2
 
 * The simplest case
 -------------------
@@ -44,7 +44,7 @@ If you want to remove wxWindows on Unix you can do this:
 * The GTK+ 2 case
 -----------------
 
-wxGTK 2.3.4 has support for the new version 2.0.X of GTK+. This means
+wxGTK 2.4.0 has support for the new version 2.0.X of GTK+. This means
 that wxGTK apps can now make use Unicode as the underlying encoding
 for all text operations. This is a very fundamental change and will
 need time to stabilize, so be careful. Anyways, after installing a

docs/gtk/readme.txt

@@ -1,7 +1,7 @@
 
-   Welcome to wxWindows/Gtk 2.3
+   Welcome to wxWindows/Gtk 2.4
 
-you have downloaded version 2.3 of the GTK port of the 
+you have downloaded version 2.4 of the GTK port of the 
 wxWindows GUI library.
 
 wxWindows no longer supports GTK 1.0 (as did some early