Hack to fall back on old createTexture API

Signature for createTexture changed a while back - http://blog.tojicode.com/2010/07/obsolete-teximage2d-wha.html

Found that FireFox supported this, but Chrome lagged behind, so I create textures as below. Remove this when all browser are using the new signature.

 try {

            /* New API change - https://xeolabs.lighthouseapp.com/projects/50643/tickets/129-fix-for-calling-obsolete-teximage2d
             */
            context.texImage2D(context.TEXTURE_2D, 0, context.RGBA, context.RGBA, context.UNSIGNED_BYTE, cfg.image);
        } catch (e) {

            /* Fall back for old browser
             */            
            context.texImage2D(context.TEXTURE_2D, 0, cfg.image, cfg.flipY);
        }