Top-level libiconv is defined per-platform. The actual libiconv
library won't be built on platforms like Linux where it doesn't need
to be, so there's no need to maintain a separate platform list here.
Required to build for FreeBSD.
The readstat package allows for reading and manipulating
SAS/Stata/SPSS data files. This can be useful for interacting and
interoperating with datasets distributed in these formats.
