Added setting of SFX volume and on/off
BUG: some window sizes cause abnormalities in displaying the game

Signed-off-by: BunnyRabbit2 (Lewis Storey) <iamlewisstorey@yahoo.com>
BUGFIX: Changed Resolution Indepentant Renderer code
Window now scales right.
Code changes are really John Cutburth's from a comment from the page I got the other code from

Signed-off-by: BunnyRabbit2 (Lewis Storey) <iamlewisstorey@yahoo.com>