Allow compatibility with 'old' Touchscreens (Linux < 3.1)

BOARD_USE_LEGACY_TOUCHSCREEN := true in your BoardConfig.mk

Support the Multitouch, 10-points tested on the qtouch (Defy/Droid)

Remember to add the new idc file required for the touchscreen/keypad
Example: /system/usr/idc/qtouch-touchscreen.idc

Change-Id: I62f8b36350784ec6ba73f4a2d942f441fe710ae3
Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Process the BTN_MOUSE event

This is required in order to make the trackball on devices that has it to
work properly, like it does before ICS. In addition to this patch, you just
need an .idc file that matches the device name for your the trackball. You can
find it by either looking in a kernel log or a logcat.

For example, a device with a Crucial optical navigation pad, will be called
curcial-oj.idc

The .idc file should contain the following:

cursor.mode = navigation
cursor.orientationAware = 1

Place the file in /system/usr/idc folder.

Enable in BoardConfig.mk with BOARD_USE_LEGACY_TRACKPAD := true

Change-Id: I8684b94871a8bf9070dcda3538a239b111da7f5b
Legacy touchscreen: Fix B key issue

Patchset 2: Clean code

Change-Id: I4c0bcb7f1cea0744ab983c87167af0bb9a472859
simplify and improve BOARD_USE_LEGACY_TOUCHSCREEN

in addition to converting ABS_MT_TOUCH_MAJOR to ABS_MT_PRESSURE, it also converts ABS_MT_WIDTH_MAJOR to ABS_MT_TOUCH_MAJOR.

also add 2 workarounds for some touchscreen driver which
 1. has BTN_TOUCH feature but it doesn't send BTN_TOUCH event
 2. sends multi-touch event for not-in-use pointer

Change-Id: I0c1c6f9a27c2dbc5e3beddda1a7f297e76c40841
reference: http://source.android.com/tech/input/touch-devices.html
Disable touch while using the stylus (Galaxy Note)

Android 4.0 cannot form multitouch events from multiple input
devices. So it is not possible to report one touchpoint from the
stylus position and, at the same time, another touchpoint from a
finger touch. Instead, when a new input device starts up the currently
active input is cancelled. This is highly undesirable while writing
with the pen.

The easiest solution is to ignore non-stylus touch events while the
stylus is within range (hovering) of the touchscreen. For example,
N-trig digitizers implement this in hardware. But wacom digitizers do
report pen data simultaneously with touch data. This patch disables
(non-stylus) touch input within 50ms of stylus data. On my Galaxy
Note this is necessary to make stylus input usable.

Change-Id: I9f458d85d8bf83d6cf03b467d46ce066fd55b7e0

Conflicts:
	services/input/InputReader.cpp
	services/input/InputReader.h
input: Add option to toggle pointer icon when using stylus

* The visible pointer icon when hovering or drawing with the stylus is
  quite annoying when trying to actually draw with it. Turn it off by
  default and add an option to turn it on.

Change-Id: Ib7f23e8b69589e3f875d150caf05065b64676e44

Conflicts:
	services/input/InputReader.cpp
	services/input/InputReader.h
	services/jni/com_android_server_input_InputManagerService.cpp

Conflicts:
	core/java/android/provider/Settings.java