changed copy constructors to reduce gcc warnings (submitted by Norman Vine)
changed copy constructors to reduce gcc warnings (submitted by Norman Vine)

markraz/vtp,nakijun/vtp,seanisom/vtp,markraz/vtp,nakijun/vtp,markraz/vtp,nakijun/vtp,seanisom/vtp,seanisom/vtp,nakijun/vtp,markraz/vtp,nakijun/vtp,markraz/vtp,seanisom/vtp,seanisom/vtp