- Install libupsclient headers/pkgconfig files. landry@ asked about
these; they needed a --with-dev configure flag to get them installed...
- Get rid of the useless ${NUT_USER} and ${NUT_ID} SUBST_VARS which are
now getting in the way of new files in the PLIST.
- Move some files from /usr/local/share/ups to a more easily recognisable
/usr/local/share/nut.