MaskedTextBox: bound the BorderBrush and BorderThickness properties.

ExtendedWPFToolkitSolution/Src/WPFToolkit.Extended/MaskedTextBox/Themes/Generic.xaml

@@ -24,6 +24,8 @@
                 <ControlTemplate TargetType="{x:Type local:MaskedTextBox}">
                     <local:WatermarkTextBox x:Name="TextBox"
                                             Background="{TemplateBinding Background}"
+                                            BorderBrush="{TemplateBinding BorderBrush}"
+                                            BorderThickness="{TemplateBinding BorderThickness}"
                                             FontFamily="{TemplateBinding FontFamily}" 
                                             FontSize="{TemplateBinding FontSize}" 
                                             FontStretch="{TemplateBinding FontStretch}"