Constants for connect mouse example.
Support for first hit test example.

Added functions and constants to implement the first hit test example.
Added support for example checker2.

Additional functions added to support checker2 example.
Additions to support checker3.
Updated for checker4 example.

Added constants and functions to support implementing the checker4
example.
Added support for blokout2 example.

Added the set and release capture functions that blokout2 uses.