Amiga-likes: better FV system integration.
* focus/unfocus event support
* use Keyboard.WaitForSystemEvent() instead of waiting for a fixed time.
  this allows very snappy event response times (you can really feel this
  while typing/editing for example) together with blinking cursor support
  this really enhances the IDE experience on Amiga-likes.


git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@29337 3ad0048d-3df7-0310-abae-a5850022a9f2