Change use of require to work with Lua 5.2

heimdal-klist-html.lsp

 <% local data, viewlibrary, page_info, session = ... %>
-<% require("htmlviewfunctions") %>
+<% htmlviewfunctions = require("htmlviewfunctions") %>
 <% html = require("acf.html") %>
 
 <% htmlviewfunctions.displaycommandresults({"kdestroy"}, session) %>

heimdal-model.lua

 module(..., package.seeall)
 
 -- Load libraries
-require("modelfunctions")
+modelfunctions = require("modelfunctions")
 fs = require("acf.fs")
 
 -- Set variables