Add hide: and hideOthers support.

Reviewed by me.

AppKit/CPApplication.j

@@ -333,6 +333,11 @@ CPRunContinuesResponse  = -1002;
     [CPPlatform activateIgnoringOtherApps:shouldIgnoreOtherApps];
 }
 
+- (void)hideOtherApplications:(id)aSender
+{
+    [CPPlatform hideOtherApplications:self];
+}
+
 /*!
     Calls \c -finishLaunching method which results in starting
     the main event loop.
@@ -515,6 +520,11 @@ CPRunContinuesResponse  = -1002;
     return _windows;
 }
 
+- (void)hide:(id)aSender
+{
+    [CPPlatform hide:self];
+}
+
 // Accessing the Main Menu
 /*!
     Returns the application's main menu

AppKit/Platform/CPPlatform.j

@@ -53,4 +53,20 @@
 #endif
 }
 
++ (void)hideOtherApplications:(id)aSender
+{
+#if PLATFORM(DOM)
+    if (typeof window["cpHideOtherApplications"] === "function")
+        window.cpHideOtherApplications();
+#endif
+}
+
++ (void)hide:(id)aSender
+{
+#if PLATFORM(DOM)
+    if (typeof window["cpHide"] === "function")
+        window.cpHide();
+#endif
+}
+
 @end