shebang consistency

[Clint Adams <clint@xxxxxxx>]

Could we standardize on a single line so as to shorten the regex
in my s/// ?

Functions/Calendar/calendar_add:#!/bin/env zsh
Functions/Example/cat:#! /usr/local/bin/zsh -f
Functions/Example/zless:#!/usr/bin/zsh -f
Functions/Misc/zkbd:#! /bin/zsh -f
Functions/Misc/zcalc:#!/usr/local/bin/zsh -i
Functions/Misc/checkmail:#! /usr/local/bin/zsh
Functions/Misc/run-help:#!/usr/local/bin/zsh