Concrete barriers

Hi,

here I have converted this mod from stable to placeable.

I divided this mod in six different mod:

1 barrier "new style"

1 barrier "old style"

2 barrier side by side "new and old style" (original mod by martinbigM500)

1 barrier "new style" of enlarged x1, 5

1 barrier "old style" of enlarged x1, 5

2 barrier side by side "new and old style" of enlarged x1, 5 (original mod by martinbigM500)