Update Android port

* INSTALL.android: Document support for gnutls and libgmp.
* build-aux/ndk-build-helper-1.mk (NDK_SO_NAMES, NDK_INCLUDES)
(SYSTEM_LIBRARIES):
* build-aux/ndk-build-helper-2.mk: Recursively resolve and add
shared library dependencies; even those of static libraries.
* build-aux/ndk-module-extract.awk: Fix makefile_imports code.
* configure.ac (ANDROID_SDK_18_OR_EARLIER, XCONFIGURE)
(LIBGMP_CFLAGS): Enable GMP and gnutls on Android.

* cross/ndk-build/Makefile.in (LOCAL_EXPORT_C_INCLUDES):
* cross/ndk-build/ndk-build-shared-library.mk: ($(call
objname,$(LOCAL_MODULE),$(basename $(1))))::($$(error
Unsupported suffix)::($(LOCAL_MODULE_FILENAME)):
* cross/ndk-build/ndk-build-static-library.mk: ($(call
objname,$(LOCAL_MODULE),$(basename $(1))))::($$(error
Unsupported suffix):
* cross/ndk-build/ndk-clear-vars.mk:
* cross/ndk-build/ndk-resolve.mk (NDK_SYSTEM_LIBRARIES):
(NDK_LOCAL_EXPORT_C_INCLUDES_$(LOCAL_MODULE)):
(NDK_SO_EXTRA_FLAGS_$(LOCAL_MODULE)):
Implement ``LOCAL_ASM_RULE'' and ``LOCAL_C_ADDITIONAL_FLAGS''
extensions for libgmp.

* doc/emacs/input.texi (Touchscreens): Document how to
horizontally scroll.
* java/org/gnu/emacs/EmacsActivity.java (attachWindow): Give the
view focus again if necessary.
(onPause): Call right super function.
* java/org/gnu/emacs/EmacsPreferencesActivity.java (onClick):
Clear dumpFileName lest Emacs try to load a nonexistent dump
file.
* java/org/gnu/emacs/EmacsView.java (onDetachedFromWindow)
(onAttachedToWindow): Call super functions.
(onCreateInputConnection): Make sure the IME never obscures
Emacs.
* java/org/gnu/emacs/EmacsWindow.java (EmacsWindow, onKeyDown)
(onKeyUp): Improve tracking of quit keys.

* lisp/isearch.el (isearch-mode): Bring up the onscreen
keyboard.
* lisp/touch-screen.el (touch-screen-current-tool): Add three
fields.
(touch-screen-handle-scroll): Allow hscrolling as well.
(touch-screen-handle-touch): Add additional fields to
`touch-screen-current-tool'.
* src/Makefile.in (LIBGMP_CFLAGS, EMACS_CFLAGS): Add new
variable.
* src/android.c (android_run_select_thread):
(android_write_event): Use pthread_cond_broadcast because
pthread_cond_signal does nothing on some Android
versions/devices?

java/org/gnu/emacs/EmacsActivity.java

@@ -134,6 +134,10 @@ public class EmacsActivity extends Activity
     layout.addView (window.view);
     child.setConsumer (this);
 
+    /* If the window isn't no-focus-on-map, focus its view.  */
+    if (!child.getDontFocusOnMap ())
+      window.view.requestFocus ();
+
     /* If the activity is iconified, send that to the window.  */
     if (isPaused)
       window.noticeIconified ();
@@ -233,7 +237,7 @@ public class EmacsActivity extends Activity
     isPaused = true;
 
     EmacsWindowAttachmentManager.MANAGER.noticeIconified (this);
-    super.onResume ();
+    super.onPause ();
   }
 
   @Override

java/org/gnu/emacs/EmacsPreferencesActivity.java

@@ -116,6 +116,11 @@ public class EmacsPreferencesActivity extends Activity
 
 	  if (file.exists ())
 	    file.delete ();
+
+	  /* Make sure to clear EmacsApplication.dumpFileName, or
+	     starting Emacs without restarting this program will
+	     make Emacs try to load a nonexistent dump file.  */
+	  EmacsApplication.dumpFileName = null;
 	}
       });
     layout.addView (textView);

java/org/gnu/emacs/EmacsView.java

@@ -22,12 +22,16 @@ package org.gnu.emacs;
 import android.content.Context;
 import android.content.res.ColorStateList;
 
+import android.text.InputType;
+
 import android.view.ContextMenu;
 import android.view.View;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.ViewGroup;
 
+import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.InputConnection;
 import android.view.inputmethod.InputMethodManager;
 
 import android.graphics.Bitmap;
@@ -566,6 +570,8 @@ public class EmacsView extends ViewGroup
 	/* Collect the bitmap storage; it could be large.  */
 	Runtime.getRuntime ().gc ();
       }
+
+    super.onDetachedFromWindow ();
   }
 
   @Override
@@ -581,6 +587,8 @@ public class EmacsView extends ViewGroup
     /* Now expose the view contents again.  */
     EmacsNative.sendExpose (this.window.handle, 0, 0,
 			    measuredWidth, measuredHeight);
+
+    super.onAttachedToWindow ();
   }
 
   public void
@@ -615,4 +623,17 @@ public class EmacsView extends ViewGroup
 	drawingFinished = null;
       }
   }
+
+  @Override
+  public InputConnection
+  onCreateInputConnection (EditorInfo info)
+  {
+    /* Make sure the input method never displays a full screen input
+       box that obscures Emacs.  */
+    info.imeOptions = EditorInfo.IME_FLAG_NO_FULLSCREEN;
+
+    /* But don't return an InputConnection, in order to force the on
+       screen keyboard to work correctly.  */
+    return null;
+  }
 };

java/org/gnu/emacs/EmacsWindow.java

@@ -124,9 +124,9 @@ public class EmacsWindow extends EmacsHandleObject
      there is no such window manager.  */
   private WindowManager windowManager;
 
-  /* The time of the last KEYCODE_VOLUME_DOWN press.  This is used to
-     quit Emacs.  */
-  private long lastVolumeButtonPress;
+  /* The time of the last KEYCODE_VOLUME_DOWN release.  This is used
+     to quit Emacs.  */
+  private long lastVolumeButtonRelease;
 
   public
   EmacsWindow (short handle, final EmacsWindow parent, int x, int y,
@@ -517,7 +517,6 @@ public class EmacsWindow extends EmacsHandleObject
   onKeyDown (int keyCode, KeyEvent event)
   {
     int state, state_1;
-    long time;
 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2)
       state = event.getModifiers ();
@@ -549,26 +548,13 @@ public class EmacsWindow extends EmacsHandleObject
 			      state, keyCode,
 			      event.getUnicodeChar (state_1));
     lastModifiers = state;
-
-    if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN)
-      {
-	/* Check if this volume down press should quit Emacs.
-	   Most Android devices have no physical keyboard, so it
-	   is unreasonably hard to press C-g.  */
-
-	time = event.getEventTime ();
-
-	if (lastVolumeButtonPress - time < 350)
-	  EmacsNative.quit ();
-
-	lastVolumeButtonPress = time;
-      }
   }
 
   public void
   onKeyUp (int keyCode, KeyEvent event)
   {
     int state, state_1;
+    long time;
 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2)
       state = event.getModifiers ();
@@ -600,6 +586,20 @@ public class EmacsWindow extends EmacsHandleObject
 				state, keyCode,
 				event.getUnicodeChar (state_1));
     lastModifiers = state;
+
+    if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN)
+      {
+	/* Check if this volume down press should quit Emacs.
+	   Most Android devices have no physical keyboard, so it
+	   is unreasonably hard to press C-g.  */
+
+	time = event.getEventTime ();
+
+	if (time - lastVolumeButtonRelease < 350)
+	  EmacsNative.quit ();
+
+	lastVolumeButtonRelease = time;
+      }
   }
 
   public void