add kivy & sdl keyboard hide support work fine

sdl/sdl1.3/.hg/last-message.txt

@@ -1,2 +1,2 @@
-disable auto hide keyboard when use press enter
+get notification from uikit to known is keyboard is hide or not
 

sdl/sdl1.3/.hg/undo.desc

@@ -1,2 +1,2 @@
-6109
+6110
 commit

sdl/sdl1.3/src/video/uikit/SDL_uikitview.h

@@ -60,6 +60,7 @@
 - (void)hideKeyboard;
 - (void)initializeKeyboard;
 @property (readonly) BOOL keyboardVisible;
+- (void)keyboardDidHide:(NSNotification *)notification; 
 #endif
 
 @end

sdl/sdl1.3/src/video/uikit/SDL_uikitview.m

@@ -248,7 +248,14 @@
     /* add the UITextField (hidden) to our view */
     [self addSubview: textField];
     [textField release];
+    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardDidHide:) name:UIKeyboardDidHideNotification object:nil];
+
 }
+- (void)keyboardDidHide:(NSNotification *)notification 
+{
+    keyboardVisible = NO;
+}
+
 
 /* reveal onscreen virtual keyboard */
 - (void)showKeyboard