Refactor file writing - adapt util/dofile.pl to use with_fallback

use strict;

use warnings;

use Text::Template;

# Because we know that Text::Template isn't a core Perl module, we use

# a fallback in case it's not installed on the system

use File::Basename;

use File::Spec::Functions;

use lib catdir(dirname(__FILE__));

use with_fallback qw(Text::Template);

# We actually expect to get the following hash tables from configdata:

#