Added list of blocking issues before official DX9 release.


git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@973 14438d79-0ffd-4333-8ae7-ea2bdd901387
Minor refactoring of HitObject friction treatment in preparation of physics changes.


git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@974 14438d79-0ffd-4333-8ae7-ea2bdd901387
fixes (alpha)-transparent issues introduced with rev. 969

git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@975 14438d79-0ffd-4333-8ae7-ea2bdd901387
fixes old DX7 COLORKEYENABLED render state by enabling alpha blending

git-svn-id: svn://svn.code.sf.net/p/vpinball/code/trunk@976 14438d79-0ffd-4333-8ae7-ea2bdd901387