Set MAINTAINER of my ports to my FreeBSD handle

[nc]

Summary

Set MAINTAINER of my ports to my FreeBSD handle (nc@).

[nc]

For the commit message, I am thinking about doing:

Set MAINTAINER of my ports to my FreeBSD handle (nc@).

Reviewed by:            0mp (mentor)
Approved by:            0mp (mentor)

That is, if you approve of the message and the patch.

[0mp]

Let's go!