Fix 64135: alt+home shortcut to go Home (command+home on mac). r=timeless a=ben

xpfe/browser/resources/content/mac/platformNavigationBindings.xul

@@ -10,6 +10,7 @@
     <key id="goBackKbMac"  key="[" observes="Browser:Back" modifiers="accel"/>
     <key id="goForwardKbMac"  key="]" observes="Browser:Forward" modifiers="accel"/>
     <key id="stopMac"  key="." oncommand="BrowserStop();" modifiers="accel"/>
+    <key id="goHome" keycode="VK_HOME" observes="Browser:Home" modifiers="meta"/>
   </keyset>  
 
 </overlay>

xpfe/browser/resources/content/navigatorOverlay.xul

@@ -78,7 +78,7 @@
 	<key id="key_find"              key="&findOnCmd.commandkey;" observes="Browser:Find" modifiers="accel"/>
 	<key id="key_findAgain"         key="&findAgainCmd.commandkey;" observes="Browser:FindAgain" modifiers="accel"/>
 
-	<!-- Go Menu -->		
+	<!-- Go Menu -->
 
 	<!-- Bookmarks Menu -->
 	<key id="addBookmarkKb"        key="&addCurPageCmd.commandkey;" observes="Browser:AddBookmark"  modifiers="accel"/>
@@ -298,7 +298,7 @@ oncommand="goPreferences('pref-themes.xul','chrome://communicator/content/pref/p
 	  <menupopup oncreate="updateGoMenu(event);">
 		  <menuitem id="menuitem-back"    value="&goBackCmd.label;"    accesskey="&goBackCmd.accesskey;"    observes="Browser:Back"    key="goBackKb"/>
 		  <menuitem id="menuitem-forward" value="&goForwardCmd.label;" accesskey="&goForwardCmd.accesskey;" observes="Browser:Forward" key="goForwardKb"/>
-		  <menuitem id="menuitem-home"    value="&goHomeCmd.label;"    accesskey="&goHomeCmd.accesskey;"    observes="Browser:Home"/>
+		  <menuitem id="menuitem-home"    value="&goHomeCmd.label;"    accesskey="&goHomeCmd.accesskey;"    observes="Browser:Home" key="goHome"/>
 		  <menuseparator />
 	  </menupopup>
   </menu>       

xpfe/browser/resources/content/os2/platformNavigationBindings.xul

@@ -17,6 +17,7 @@
     <!-- Supporting IE 'refresh' shortcut key -->
     <key id="reloadIE" keycode="VK_F5" observes="canReload"/>
 
+    <key id="goHome" keycode="VK_HOME" observes="Browser:Home" modifiers="alt"/>
   </keyset>  
 
 </overlay>

xpfe/browser/resources/content/unix/platformNavigationBindings.xul

@@ -14,6 +14,8 @@
          we live and learn.  -->
     <key id="goBackKbWacko"  key="&goBackCmd.commandKey;" observes="Browser:Back" modifiers="accel"/>
     <key id="goForwardKbWacko"  key="&goForwardCmd.commandKey;" observes="Browser:Forward" modifiers="accel"/>
+
+    <key id="goHome" keycode="VK_HOME" observes="Browser:Home" modifiers="alt"/>
   </keyset>  
 
 </overlay>

xpfe/browser/resources/content/win/platformNavigationBindings.xul

@@ -17,6 +17,8 @@
     <!-- Supporting IE 'refresh' shortcut key -->
     <key id="reloadIE" keycode="VK_F5" observes="canReload"/>
 
+    <key id="goHome" keycode="VK_HOME" observes="Browser:Home" modifiers="alt"/>
+
   </keyset>  
 
 </overlay>