Include stapgames in the testsuite

Include stapgames in the testsuite

New systemtap.examples/stapgames directory added with the supporting
tapsets located in the 'tapset' subdirectory.  All tests run with -p4
specified.

* testsuite/systemtap.examples/stapgames/block.meta : block meta data
* testsuite/systemtap.examples/stapgames/block.stp : break a ceiling of
  blocks
* testsuite/systemtap.examples/stapgames/eater.meta : eater meta data
* testsuite/systemtap.examples/stapgames/eater.stp : eat the .'s before
  being eaten
* testsuite/systemtap.examples/stapgames/lifegame.meta : life meta data
* testsuite/systemtap.examples/stapgames/lifegame.stp : watch a
  'lifeform' morph and evolve
* testsuite/systemtap.examples/stapgames/pingpong.meta : ping pong meta
  data
* testsuite/systemtap.examples/stapgames/pingpong.stp : cursor bounces
  around terminal reflecting off edges
* testsuite/systemtap.examples/stapgames/tapset/audio.stp : audio
  functionality
* testsuite/systemtap.examples/stapgames/tapset/cursor.stp : cursor
  functionality and tracking
* testsuite/systemtap.examples/stapgames/tapset/game.stp : seed values
* testsuite/systemtap.examples/stapgames/tapset/gmtty.stp : tty functionality
* testsuite/systemtap.examples/stapgames/tapset/input.stp : controlling
  game input