[regexxer] Add a tooltip.

[Fabien Parent <fparent src gnome org>]

commit cca795926a8e1c558b341aebf618b28060910504
Author: Fabien Parent <parent f gmail com>
Date:   Sun Mar 6 17:01:06 2011 +0100

    Add a tooltip.
    
    Re-add a tooltip on the replace entry which has disappeared in the GtkBuilder port.

 ui/mainwindow.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/ui/mainwindow.ui b/ui/mainwindow.ui
index 011f282..3dbdb7f 100644
--- a/ui/mainwindow.ui
+++ b/ui/mainwindow.ui
@@ -736,6 +736,7 @@
                           <object class="GtkComboBoxText" id="comboboxentry_substitution">
                             <property name="visible">True</property>
                             <property name="can_focus">False</property>
+                            <property name="tooltip_text" translatable="yes">The new string to substitute. As in Perl, you can refer to parts of the match using $1, $2, etc. or even $+, $&amp;amp;, $` and $'. The operators \l, \u, \L, \U and \E are supported as well.</property>
                             <property name="has_entry">True</property>
                             <child internal-child="entry">
                               <object class="GtkEntry" id="comboboxentry_entry1">