Comment # 3 on bug 1074249 from Michal Srb

In libxcb between 1.12..d10194a321c3db851b3ede9a98cdc95e951943aa only this
commit seems to be related to xinput:
  * ee9dfc9a7658e7fe75d27483bb5ed1ba4d1e2c86
      add support for eventstruct

In addition in xcb/proto between 1.12..master there are some more:
  * 89b022fdacfe7b39b2122c6ec1a4097767b1ee29
      xinput: typedef for event_type_base
  * 4aa40fbd5e05833b72327ea37421b09dff246732
      add support for eventstruct
  * 97fbba25baf241cbcda882739db423b1d36e440a
      SendExtensionEvent uses eventstruct

The 89b022fdacfe7b39b2122c6ec1a4097767b1ee29 specifically says that it does not
change API nor ABI. The other commits do change API/ABI; they change one
parameter of xcb_input_send_extension_event from byte array to a new struct.

I'll add them all to our package.