Update Android port

Update Android port

* configure.ac: Test for getpwent using gl_CHECK_FUNCS_ANDROID.
(bug#65319)

* etc/MACHINES (Android): Mention that a non-GUI build is also
possible on Android.

* lisp/loadup.el: Provide for regular builds on Android.
(bug#65339)

* lisp/wid-edit.el (widget-event-start): Remove function, since
event-start now does the same thing.
(widget-button--check-and-call-button, widget-button-click):
Adjust correspondingly.  Reported by Stefan Monnier
<monnier@iro.umontreal.ca>.

* src/sysdep.c (close_output_streams): Apply workarounds for the
file descriptor sanitizer on all builds where __ANDROID__ is
defined, not just Android port builds.  (bug#65340)