Port Android battery status to Android 4.4 and earlier

Port Android battery status to Android 4.4 and earlier

* java/org/gnu/emacs/EmacsService.java (EmacsService)
(queryBattery19): New function.
(queryBattery): Call it on old systems.  Also, return AC line
status and temperature.
* lisp/battery.el (battery-android): Implement more format
directives.
* src/android.c (android_query_battery): Handle new status
fields.
* src/android.h (struct android_battery_state): Add `plugged'
and `temperature'.
* src/androidfns.c (Fandroid_query_battery): Return new fields.