git clone can drop all to opt

[jjrbfi]

We can drop files to /opt/halcore with out using cp after git clone. (I made changes on that but where re-changed)

$ git clone https://github.com/grotius-cnc/hal_core.git /opt/hal-core

[grotius-cnc]

ok, nice i will try it out.

[grotius-cnc]

it works! nice.

[jjrbfi]

I did that change but was re-changed.
I will close/lock this.