Matthew Woehlke authored Sep 28, 2016 and Brad King committed Sep 28, 2016

The `PARSE_ARGV` mode was recently added to help functions properly
parse their arguments even when those arguments may be quoted and
contain literal `;` in their values.  Fix the implementation to encode
`;`s in reported multi-value arguments and in `UNPARSED_ARGUMENTS` so
that `;`s in the individual values are preserved in the lists.  This
allows clients to access all their argument values correctly.