nut 2.7.2 (new formula)

nut, also known as network UPS tools, is a set of tools for
communicating with UPSes, PDUs and solar power controllers. It provides
a daemon, logging and drivers. It communicated over serial lines, USB,
SNMP, IPMI and via HTTP. The name 'nut' is not particularly descriptive
and does not help users find UPS tools, but it matches the Debian
package nomenclature.

This pull request requires the 'powerline' new formula pull request.
Yes, of course they can. However, I've laid out the order of arguments to match the order of ./configure switches. With a large number of them, coding by convention like this makes maintaining this formula much easier. Given that compile time exceeds this step's time by orders of magnitude, it seems right to do it this way.