* java/AndroidManifest.xml.in: Update targetSdkVersion to 36.

* java/INSTALL: Document revised compilation dependencies.

* java/org/gnu/emacs/EmacsActivity.java (interceptBackGesture):
New function.
(onCreate): Invoke the same to register back gesture callbacks
on Android 16 or better.

* java/org/gnu/emacs/EmacsWindow.java (onBackInvoked): New
function.

* src/keyboard.c (lispy_function_keys): Amend with new symbols
introduced in Android API 36.

Run "TZ=UTC0 admin/update-copyright".

* java/INSTALL: Don't refer users to build-tools 33.0.x.

* java/res/values-v35/styles.xml: New dark theme; define status
bar colors properly for this release.

* configure.ac: Temporary workaround for Gnulib bug.  Verify
that the provided android.jar corresponds to Android 35, or any
later version.

* cross/ndk-build/Makefile.in (NDK_BUILD_SO_LDFLAGS): New
variable.

* cross/ndk-build/ndk-resolve.mk
(NDK_LOCAL_A_NAMES_$(LOCAL_MODULE)): Define to
NDK_BUILD_SO_LDFLAGS by default to enable building binaries
with support for 16 kb page sizes.

* java/AndroidManifest.xml.in: Target SDK 35.

* java/INSTALL (16KB PAGE SIZES): New section.  Replace
references to Android 34 with 35.

* java/org/gnu/emacs/EmacsActivity.java (onCreate): Restore
pre-SDK 35 inset-relative placement.

* java/org/gnu/emacs/EmacsFillPolygon.java (perform): Suppress
deprecation warnings, and document why.

* m4/ndk-build.m4 (ndk_INIT, ndk_LATE): Check for and enable
toolchain support for 16 KB page sizes, if available.
(ndk_CONFIG_FILES): Export linker options so derived.

* src/conf_post.h [__ANDROID_API__ < 35]: Include system time.h
and redefine timezone_t to rpl_timezone_t, so that the Gnulib
replacement may not conflict with the useless OS type.

* configure.ac (ZIP): Search for a `zip' executable and
substitute the same if targeting SDK 8.

* java/INSTALL: Document new requirement.

* java/Makefile.in (GZIP_PROG, ZIP): New substitutions.
(.PHONY): Delete references to directory-tree.

(install_temp): On SDK 8 and earlier, compress large *.el and
Info files with gzip, and divide install_temp into three
separate directories, with one for large files, another for
gzipped files, and one more for the remainder.
(install_temp/assets/directory-tree, install_temp/assets/version)
(install_temp/assets/build_info): Merge these rules into
install_tmp, that they may execute before the assets directory
is split.
(emacs.apk-in): Package each directory separately, accounting
for their varied compression requirements.

* lisp/term/android-win.el (input-decode-map): Define select to
return in input-decode-map.

* java/INSTALL (LIBRSVG): New section.
(BUILDING WITH OLD NDK VERSIONS): Update recommended invocation
of configure in the case of a combined toolchain.