Port Emacs to Android 34

* configure.ac: Detect and require Android 34 headers.

* doc/emacs/android.texi (Android Environment): Mention new
permissions mandated by Android 34.

* java/AndroidManifest.xml.in: Introduce new permissions and
foreground service types prerequisite for background execution under
Android 34.

* java/INSTALL: Update installation documentation.

* java/org/gnu/emacs/EmacsSdk7FontDriver.java (Sdk7FontEntity)
(Sdk7FontObject):

* java/org/gnu/emacs/EmacsService.java (onCreate): Silence deprecation
warnings.

* src/android.c: Update documentation.

java/org/gnu/emacs/EmacsSdk7FontDriver.java

@@ -99,6 +99,7 @@ public class EmacsSdk7FontDriver extends EmacsFontDriver
     /* The typeface.  */
     public Sdk7Typeface typeface;
 
+    @SuppressWarnings ("deprecation")
     public
     Sdk7FontEntity (Sdk7Typeface typeface)
     {
@@ -120,6 +121,7 @@ public class EmacsSdk7FontDriver extends EmacsFontDriver
     /* The typeface.  */
     public Sdk7Typeface typeface;
 
+    @SuppressWarnings ("deprecation")
     public
     Sdk7FontObject (Sdk7Typeface typeface, int pixelSize)
     {