Fixed a bug when accessing array indices that contain a minus sign, it is now possible to access those using {$var[index-foo]}, {$var['index-foo']} or {$index="index-foo"} {$var[$index]}
fixes #44


git-svn-id: svn://dwoo.org/dwoo/trunk@286 0598d79b-80c4-4d41-97ba-ac86fbbd088b