add a new registry subfolder (DX9) to separate registry settings DX7/DX9

git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@978 14438d79-0ffd-4333-8ae7-ea2bdd901387
add table zscale again

git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@979 14438d79-0ffd-4333-8ae7-ea2bdd901387