Revert "util/dofile.pl: only quote stuff that actually needs quoting"

This wasn't a good solution, too many things depend on the quotes being
there consistently.

This reverts commit 49cd47ea

.

Fixes #5772

Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5773)