Explanation for binary files inside source package according to
  http://lists.debian.org/debian-devel/2013/09/msg00332.html

Files: data/curl_symbols.rda
Documented: man/curl_options.Rd
  data set listing all symbols (including options) provides more information about the symbols,
  including when support was added/removed from libcurl

 -- Andreas Tille <tille@debian.org>  Thu, 14 Sep 2017 09:31:48 +0200
