Bug#953631: Hyperlinks should be underlined, else blanks break them

[Katsumi Yamaoka]

On Thu, 12 Mar 2020 18:56:01 +0800, 積丹尼さん wrote:
> OK. I hope all the defaults get changed.

Agreed and changed.  By default, now the link faces are bold and
underlined, and use wavy underline when point is.

Thanks.