xinput: Add XI v1.5

xinput: Add XI v1.5

New:
- Requests
  * ListDeviceProperties
  * ChangeDeviceProperty
  * DeleteDeviceProperty
  * GetDeviceProperty

- Enum
  * PropertyFormat

- Event
  * DevicePropertyNotify

The requests ChangeDeviceProperty and GetDeviceProperty use switches to
return a list depending on the format (8bit, 16bit and 32bit) of the
property value.
We reuse the <bitcase> here. Which is possible, because the format
values don't have equal bits. But, this is rather a hack and must be
changed when the value test (a <case>) for switches is implemented.

Signed-off-by: Daniel Martin <consume.noise@gmail.com>