stunnel.rb: Removed odd line-endings

The patch was just replacing the file anyway.  This way there
aren't CRLF characters in the middle of the file.

Closes #27560.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>
stunnel: always use Homebrew openssl
Remove remaining explicit xz build-time deps

These dependencies are automatically detected from the URL, so declaring
them is redundant. If these formulae ever get a head or devel spec, then
explicit xz deps would need to be re-scoped appropriately. Thus we
should remove them.
Remove comment
Detect build-time deps from resource downloads