libinput: port over JumpyTouchFilter from Gingerbread

 This is the 2nd commit message:

libinput: Introduce touch.filterTouchEvents parameter

Parameter will be used to decide wheter to apply filters to the touch
events of devices with bad touchscreens (such as bravo or passion).

libinput: Add applyFilters() and applyFiltersWithId functions.

Functions are called when filterTouchInput parameter is true.

libinput: MultiTouchInputMapper: hook up JumpyTouchFilter.

libinput: MultiTouchInputMapper: modify JumpyTouchFilter.

    - Drop more points when transitioning
    - Drop both coordinates when transitioning
    - If last event was hovering reset the dropped points count and
      do nothing

libinput: MultiTouchInputMapper: add BadTouchReleaseFilter.

When lifting one of two fingers on HTC Bravo's touchscreen an jump to
0x0 is emmited. The BadTouchReleaseFilter seaches for a jump like this
and replaces all points with the last ones.

libinput: rename LOGD to ALOGD

Change-Id: I50b74717edb0af082b067a552d6b10467c0eb3f2