* java/org/gnu/emacs/EmacsWindow.java (moveResizeWindow): New
method, which alters all of the bounding box of a window at
once.

* src/android.c (android_init_emacs_window): Load method
`move_resize_window'.
(android_move_resize_window): Invoke this method, rather than a
sequence of operations that will produce two ConfigureNotify
events.

* src/androidterm.c (android_set_window_size_and_position_1)
(android_set_window_size_and_position): New functions; ported
from X.
(android_create_terminal): Register the same.

* java/org/gnu/emacs/EmacsNative.java (setEmacsParams): New arg
UIMODE.
(sendConfigurationChanged): New args DETAIL and UI_MODE.

* java/org/gnu/emacs/EmacsNoninteractive.java (main1): Provide
an undefined UI mode.

* java/org/gnu/emacs/EmacsService.java (EmacsService): New field
uiMode.
(onCreate): Initialize this field at start-up and provide the
same to setEmacsParams.
(onConfigurationChanged): If the UI mode has been altered,
generate a configuration changed event to match.

* src/android.c (android_ui_mode): New variable.
(setEmacsParams): New argument UI_MODE.  Initialize the same
from this variable.

* src/androidgui.h (enum android_configuration_changed): New
enum.
(struct android_configuration_changed_event): New field
`DETAIL'.  Convert fields providing specifics into a union of
display density information and a UI mode integer.

* src/androidterm.c (handle_one_android_event): Handle both
manners of configuration change events.
(android_term_init): Initialize Vtoolkit_theme from UI mode
provided at start-up.

* src/frame.c (syms_of_frame): Always define Vtoolkit_theme.
Define Qtoolkit_theme_set_functions.

* src/gtkutil.c (xg_update_dark_mode_for_all_displays):

* src/w32term.c (w32_read_socket): Generate special toolkit
theme events, rather than executing hooks directly within the
read_socket callback.

* src/keyboard.c (kbd_buffer_get_event)
<TOOLKIT_THEME_CHANGED_EVENT>: Run Qtoolkit_theme_set_functions
and set Vtoolkit_theme from event->ie.arg.

* src/termhooks.h (enum event_kind): New event
TOOLKIT_THEME_CHANGED_EVENT.

* src/android.c (android_set_dashes): Always release local
reference to dash array even when it was returned by
GetObjectField.

* java/org/gnu/emacs/EmacsNative.java
(sendConfigurationChanged): Declare function.

* java/org/gnu/emacs/EmacsSdk7FontDriver.java (Sdk7FontEntity)
(Sdk7FontObject): Do not access `metrics' field deleted from
`EmacsService'.

* java/org/gnu/emacs/EmacsService.java (EmacsService)
<metrics, resources>: Delete fields.
<dpiX, dpiY, dpiScaled>: New fields.
(onCreate): Adjust accordingly.  Record current display metrics
for subsequent comparison.
(onConfigurationChanged): New function.

* lisp/dynamic-setting.el (font-setting-change-default-font):
Enable on systems where font-get-system-font is not defined if
invoked with SET-FONT nil.

* src/android.c (sendConfigurationChanged): New function.

* src/androidgui.h (ANDROID_CONFIGURATION_CHANGED): New enumerator.
(struct android_configuration_changed): New structure.
(union android_event): Add `config' member.

* src/androidterm.c (handle_one_android_event): Handle
ANDROID_CONFIGURATION_CHANGED events.
(syms_of_androidterm): Define Qfont_render, and
Qdynamic_setting.  Provide the latter.

* src/android.c (MAXARGS): Delete enumerator.
(android_rewrite_spawn_argv): Don't mandate a maximum number of
arguments.

* src/android.c (android_init_thread_events)
(android_run_select_thread): Guarantee that the select thread is
initialized before returning.

* test/src/process-tests.el
(process-tests/fd-setsize-no-crash/make-process)
(process-tests/fd-setsize-no-crash/make-pipe-process)
(process-tests/fd-setsize-no-crash/make-network-process)
(process-tests/fd-setsize-no-crash/make-serial-process): Skip on
Android.

* src/android.c (struct android_thread_event_queue): New
structure.  Move global pselect arguments, mutexes, and
semaphores, and pipes here.
(struct android_event_queue) <select_mutex, select_thread>:
Remove to the above-named struct.
(android_init_thread_events, android_finalize_thread_events)
(android_get_poll_thread): New functions.
(android_run_select_thread): Accept a set of mutexes and
thread-local data as the first argument, and operate with them
rather than globals.
(android_handle_sigusr1): Rename to
`android_handle_poll_signal'.  Set thread-specific cancellation
indicator.
(android_init_events): Properly abort after a fatal condition.
Enable interruptible polling on Android 5.1 and later, not 4.2.
(android_select): Never check for queries here, but in
thread_select, if threads are enabled.  Adapt to per-thread
polling threads and only enable interruptible polling on Android
5.1 and later.
(android_before_select): New function.

* src/android.h (android_before_select): New declaration.

* src/thread.c (thread_select): Call `android_before_select'
before the global lock is released.