Allow starting Emacs --debug-init on Android

* doc/emacs/android.texi (Android Troubleshooting): Document
`debug-init' option.
* java/AndroidManifest.xml.in
(EmacsLauncherPreferencesActivity): New activity.  Export on
systems older than Android 7.0.
* java/org/gnu/emacs/EmacsActivity.java (onCreate): Adjust for
string startup argument.
* java/org/gnu/emacs/EmacsLauncherPreferencesActivity.java: New
file.
* java/org/gnu/emacs/EmacsPreferencesActivity.java
(EmacsPreferencesActivity): Don't make final.
(startEmacsQ): Give start-up argument as an argument, not as a
boolean.
(startEmacsDebugInit): New function.
(onCreate): Register new listener; make final.
* java/org/gnu/emacs/EmacsService.java (onCreate): Pass
extraStartupArgument.
* java/org/gnu/emacs/EmacsThread.java (EmacsThread): Rename
startDashQ to extraStartupArgument.
(run): Adjust accordingly.
* java/res/values-v24/bool.xml:
* java/res/values/bool.xml:
* java/res/values/strings.xml: New files.
* java/res/xml/preferences.xml: Add new option.  Move string
resources around.

1 files changed, 7 insertions, 5 deletions

diff --git a/java/res/xml/preferences.xml b/java/res/xml/preferences.xml
index f0c3abb52e7..d52d28816e5 100644
--- a/java/res/xml/preferences.xml
+++ b/java/res/xml/preferences.xml
@@ -19,10 +19,12 @@ along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>. -->
 
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
     <Preference android:key="start_quick"
-                android:title="Restart Emacs with -Q"
-                android:summary="Restart Emacs, but do not load site lisp or init files."/>
-
+                android:title="@string/start_quick_title"
+                android:summary="@string/start_quick_caption"/>
+    <Preference android:key="start_debug_init"
+                android:title="@string/start_debug_init_title"
+                android:summary="@string/start_debug_init_caption"/>
     <Preference android:key="erase_dump"
-                android:title="Delete dump file"
-                android:summary="Remove the dumped state created when Emacs was installed"/>
+                android:title="@string/erase_dump_title"
+                android:summary="@string/erase_dump_caption"/>
 </PreferenceScreen>