Update Android port

* java/org/gnu/emacs/EmacsInputConnection.java
(EmacsInputConnection, performContextMenuAction): New function.
* java/org/gnu/emacs/EmacsNative.java (EmacsNative)
(performContextMenuAction): New function.
* src/android.c (android_get_gc_values): Implement more
efficiently.
* src/androidterm.c (android_handle_ime_event): Pass through
`update' argument to `finish_composing_text'.  Fix thinko.
* src/textconv.c (really_finish_composing_text)
(really_set_composing_text, really_set_composing_region)
(handle_pending_conversion_events_1, finish_composing_text): New
argument `update'.  Notify IME of conversion region changes if
set.
* src/textconv.h: Update structs and prototypes.

java/org/gnu/emacs/EmacsInputConnection.java

@@ -256,6 +256,52 @@ public final class EmacsInputConnection extends BaseInputConnection
     return true;
   }
 
+  @Override
+  public boolean
+  performContextMenuAction (int contextMenuAction)
+  {
+    int action;
+
+    if (EmacsService.DEBUG_IC)
+      Log.d (TAG, "performContextMenuAction: " + contextMenuAction);
+
+    /* Translate the action in Java code.  That way, a great deal of
+       JNI boilerplate can be avoided.  */
+
+    switch (contextMenuAction)
+      {
+      case android.R.id.selectAll:
+	action = 0;
+	break;
+
+      case android.R.id.startSelectingText:
+	action = 1;
+	break;
+
+      case android.R.id.stopSelectingText:
+	action = 2;
+	break;
+
+      case android.R.id.cut:
+	action = 3;
+	break;
+
+      case android.R.id.copy:
+	action = 4;
+	break;
+
+      case android.R.id.paste:
+	action = 5;
+	break;
+
+      default:
+	return true;
+      }
+
+    EmacsNative.performContextMenuAction (windowHandle, action);
+    return true;
+  }
+
   @Override
   public ExtractedText
   getExtractedText (ExtractedTextRequest request, int flags)

java/org/gnu/emacs/EmacsNative.java

@@ -208,6 +208,8 @@ public final class EmacsNative
   public static native void setSelection (short window, int start, int end);
   public static native void performEditorAction (short window,
 						 int editorAction);
+  public static native void performContextMenuAction (short window,
+						      int contextMenuAction);
   public static native ExtractedText getExtractedText (short window,
 						       ExtractedTextRequest req,
 						       int flags);