xinput: rep QueryDeviceState struct InputState: full support

xinput: rep QueryDeviceState struct InputState: full support

Full support for the QueryDeviceState reply.
This has been done by changing the struct InputState
with using switch-case and implicit-padding="false".

Also fixed the type of field valuators of struct ValuatorState
from CARD32 to INT32.

V2: patch revised:
* removed the implicit-padding="false" attribute, according
  to the discussion in this thread.
* give names to the cases, which generates more beautiful code.

spec:
http://cgit.freedesktop.org/xorg/proto/inputproto/tree/specs/XIproto.txt?id=inputproto-2.3.1#n2082
http://cgit.freedesktop.org/xorg/lib/libXi/tree/specs/encoding.xml?id=libXi-1.7.4#n1728

Message-ID: <5400B9F6.5000208@DemoRecorder.com>
Patch-Thread-Subject: [Xcb] xinput:QueryDeviceState: full-support: generator and xml-changes
Patch-Set: QueryDeviceState
Patch-Number: proto 2/2
Patch-Version: V2
Signed-off-by: Christian Linhart <chris@DemoRecorder.com>
Reviewed-By: Ran Benita <ran234@gmail.com>