Add allowBackup="false" so that updating to the new SDK doesn't cause

Android to start automatically backing up app settings (otherwise it
would back up the host key).

NOTES

@@ -876,6 +876,27 @@ useful.  I think I'm gonna leave that be.
 More productively, I found that it won't startForegroundService() because
 that was added at Oreo!
 
+I can't seem to get start-on-boot to work, but from some of the crap in
+logcat, I have the idea CyanogenMod might not be good at broadcasting the
+boot event.
+
+Now for the interesting test...I uninstalled SimpleSSHD on the Moto X
+(API 22), and am reinstalling it new.  So it won't have grandfathered
+permissions.  It works fine!  No surprises.  It still doesn't start on
+boot *shrug*.
+
+Now to try the same uninstall test with Moto Z2 Force (API 26).  It works
+fine, and on the first start-up it does ask for permission to access
+files (/sdcard).  To my surprise, it saved my Settings and my
+/data/user/0/org.galexander.sshd/files.  That's actually kind of bad,
+because the host key would be saved, and there aren't really many
+settings to re-enter in the upside case.  Apparently this is new behavior
+since I added targetSdkVersion>=23, so users haven't had their data
+backed up yet and I can change this setting with allowBackup="false" in
+the manifest...
+
+allowBackup="false" took immediate effect and had no surprises...
+
 
 XXX - test with Android 16, and on my Moto X, and emulated 26, and emulated 28.
 

app/src/main/AndroidManifest.xml

@@ -8,7 +8,8 @@
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
-    <application android:label="SimpleSSHD" android:icon="@drawable/icon">
+    <application android:label="SimpleSSHD" android:icon="@drawable/icon"
+	  android:allowBackup="false">
         <activity android:name="SimpleSSHD" android:label="SimpleSSHD"
 	    android:launchMode="singleTask">
             <intent-filter>