Log Message:
Update to 1.7.3:

Two important patches fixing deadlocks when using XIPassiveGrab requests.
You're recommended to updated.

Note that we now require libX11 1.6, that's a new dependency over 1.7.2 but
it's over a year old by now anyway.

Jasper St. Pierre (2):
      XIPassiveGrab: Fix display locking inside _XIPassiveGrabDevice for error paths
      XIPassiveGrab: Fix completely broken locking in XIGrabTouchBegin

Keith Packard (1):
      man: Update XIQueryVersion docs to match new version compatibility semantics

Michael Joost (1):
      Remove fallback for _XEatDataWords, require libX11 1.6 for it

Peter Hutterer (1):
      libXi 1.7.3