Log Message:
Update to 1.0.6.  Changes:
* Fixed a two-player bug where the wrong guy won if lines were sent
* Option to modify audio buffer size to fix sound problems
* Guiding lines implemented in addition to the helping shadow
* Option for asynchron collision check that allows to move a block
  below others though 'smooth drop' is enabled
* Fixed security holes created by improper use of sprintf
* Windows manager's close button works
* Expert mode with unbalanced properties for next block to make it
  difficult to fit
* In mode 'figures' tiles and lines are no longer added while game is
  paused
* In expert mode there is now a 50% chance of balanced properties
* If the next new block is the same as the current block the random
  selection is repeated only once (instead of until different), thus
  there may be several equal blocks in a row now
* Option added to give all players the same blocks in the same order
  for a multiplayer game when expert mode is off