Bring chat focus behaviour closer to Phoenix by default, and an option

indra/newview/app_settings/settings.xml

@@ -9,6 +9,17 @@
 		<string>settings_rlv.xml</string>
 	</array>
 
+    <key>PhoenixIMAnnounceStealFocus</key>
+    <map>
+      <key>Comment</key>
+      <string>Open a new IM tab when another person begins typing to you and announce that they are doing so.</string>
+      <key>Persist</key>
+      <integer>1</integer>
+      <key>Type</key>
+      <string>Boolean</string>
+      <key>Value</key>
+      <integer>0</integer>
+    </map>
     <key>UseNewTargetOmegaCode</key>
     <map>
       <key>Comment</key>