bug#20926: 25.0.50; Quotation marks always display as hard quotes

[Artur Malabarba]

Just to add some more information.
On the help buffer describing the character, all of the following
lines display a hard ascii quote

>             character: ‘ (displayed as ‘) (codepoint 8216, #o20030, #x2018)
>               display: by display table entry [?'] (see below)
> ': xft:-unknown-Ubuntu Mono-normal-normal-normal-*-13-*-*-*-m-0-iso10646-1 
> (#x0A)

On the other hand, the decomposition line below actually displays a
proper round left quotation mark (between two plain quotes, of
course). So I know that emacs can display them.

>   decomposition: (8216) ('‘')