try to be upwards compatible with the windowed fullscreen mode of DX9 VP

git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@922 14438d79-0ffd-4333-8ae7-ea2bdd901387
Merge branch 'master' into fixes
Merge branch 'fixes' into dev (but did not apply patch for VP9.2.1 windowed fullscreen compatibility).
Some gate normal cleanup.