~dricottone/pkgbuilds

ref: a3e5be6616b782b41891469d0b85b05a992e0ff9 pkgbuilds/udunits d---------
Initial commit

A long journey to packaging r-tidyverse. The current highest-level
packages that are successfully built are dtplyr, waldo, callr, and xml2.
A handful of others (brio, digest, praise, units, zeallot) are currently
freestanding but will become dependencies soon.