ER-671: Add LLRegionSayTo() LSL function. Added viewer preferences color...

ER-671: Add LLRegionSayTo() LSL function.  Added viewer preferences color picker under 'Colors' panel for messages sent directly to viewer via llRegionSayTo().  Reviewed by Kelly.

indra/newview/skins/default/xui/en/panel_preferences_colors.xml

@@ -206,6 +206,37 @@
    width="95">
     Errors
   </text>
+  <color_swatch
+   can_apply_immediately="true"
+   color="LtOrange"
+   follows="left|top"
+   height="24"
+   label_height="0"
+   layout="topleft"
+   left="360"
+   name="direct"
+   top_pad="-15"
+   width="44" >
+    <color_swatch.init_callback
+		 function="Pref.getUIColor"
+		 parameter="DirectChatColor" />
+    <color_swatch.commit_callback
+		 function="Pref.applyUIColor"
+		 parameter="DirectChatColor" />
+  </color_swatch>
+  <text
+   type="string"
+   length="1"
+   follows="left|top"
+   height="10"
+   layout="topleft"
+   left_pad="5"
+   mouse_opaque="false"
+   name="text_box10"
+   top_delta="5"
+   width="95">
+    Direct
+  </text>
   <color_swatch
    can_apply_immediately="true"
    color="LtYellow"