[Android] Add the capability to dynamically enable and disable the input overlay during emulation.

Source/Android/res/menu/emuwindow_overlay.xml

@@ -1,4 +1,12 @@
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <!-- Enable/Disabe Input Overlay -->
+    <item
+        android:id="@+id/enableInputOverlay"
+        android:showAsAction="ifRoom"
+        android:title="@string/disable_input_overlay"/>
+
+    <!-- Save State Slots -->
     <item
         android:id="@+id/saveStateRoot"
         android:showAsAction="ifRoom"
@@ -21,6 +29,7 @@
         </menu>
     </item>
 
+    <!-- Load State Slots -->
     <item
         android:id="@+id/loadStateRoot"
         android:showAsAction="ifRoom"
@@ -45,7 +54,7 @@
 
     <item
         android:id="@+id/exitEmulation"
-        android:showAsAction="always"
+        android:showAsAction="ifRoom"
         android:title="@string/overlay_exit_emulation">
     </item>
 </menu>

Source/Android/res/values-ja/strings.xml

@@ -29,6 +29,8 @@
     <string name="file_clicked">クリックされたファイル： %1$s</string>
 
     <!-- Emulation Window Overlay -->
+    <string name="enable_input_overlay">入力オーバーレイを有効</string>
+    <string name="disable_input_overlay">入力オーバーレイを無効</string>
     <string name="overlay_savestate">ステートセーブ</string>
     <string name="overlay_loadstate">ステートロード</string>
     <string name="overlay_exit_emulation">終了</string>

Source/Android/res/values/strings.xml

@@ -29,6 +29,8 @@
     <string name="file_clicked">File clicked: %1$s</string>
 
     <!-- Emulation Overlay -->
+    <string name="enable_input_overlay">Enable Input Overlay</string>
+    <string name="disable_input_overlay">Disable Input Overlay</string>
     <string name="overlay_savestate">Save State</string>
     <string name="overlay_loadstate">Load State</string>
     <string name="overlay_exit_emulation">Exit</string>