pkgbase: Create a FreeBSD-utilities package and make it the default one

[manu]

Summary

The default package use to be FreeBSD-runtime but it should only contain
binaries and libs enough to boot to single user and repair the system, it
is also very handy to have a package that can be tranform to a small mfsroot.
So create a new package named FreeBSD-utilities and make it the default one.
Also move a few binaries and lib into this package when it make sense.

[gjb]

I think my comment from D21503 applies here as well.

[manu]

In D21506#468465, @gjb wrote:

I think my comment from D21503 applies here as well.

And my reply from D21503 applies here too :)

[gjb]

I'll reluctantly accept the revision, noting my objection pointed out above. I do not feel strongly enough in either direction, so I want to be clear that while I am "accepting" this change, it is with hesitance.

[bapt]

I quite agree with the approach, I just think we can end up with a better name, but I am not creative enough to find one. but the general approach of having a runtime package which is good enough for single user and another which is the minimum for base system for multiuser is imho a good approach