Changes:
  * Added cropping support to the dump/resume API.
  * Some code & documentation tweaks & cleanups.

API Changes:
  * Added the is_ntx_quirky_landscape field to FBInkState.
  * The layout of the FBInkRect struct has been modified slightly (left now comes before top).
  * The layout of the FBInkDump struct has been heavily modified:
      * The dump's region is now tucked away in a proper "area" FBInkRect
        (instead of x/y/w/h).
      * There's a new "clip" FBInkRect that you can modify to only restore a portion of the dump's area.
        It expects absolute coordinates (i.e., what's restored is the interesection between clip and area).
        If they do not overlap, the resume call fails w/ -ENOTSUP.

ABI Changes:
  * Both struct layout changes could arguably be considered ABI breaks ;).