Permit old-school getopts usage

[Alhadis]

By "old-school", I simply mean t:h:i:s:form:a:t used by the shell built-in (and Python's getopt.getopt, IIRC). It wouldn't be at all difficult to map it to the format expected by JavaScript's getOpts:

"hvl:n:"

/* Expands to become: */
{
    "-h": "",
    "-v": "",
    "-l": "<arg>",
    "-n": "<arg>"
}