cut the plunger at the bottom of the table if pulled, new plunger texture with a white tip added to default table

git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@723 14438d79-0ffd-4333-8ae7-ea2bdd901387
proper clipping of the region update rectangles and final plunger off screen rendering fix

git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@724 14438d79-0ffd-4333-8ae7-ea2bdd901387