[committed] Switch to UTF-8 for INSTALL

[Siddhesh Poyarekar]

On 2023-06-29 14:18, Joseph Myers wrote:
> On Thu, 29 Jun 2023, Siddhesh Poyarekar via Libc-alpha wrote:
> 
>> -   * GNU 'texinfo' 4.7 or later
>> +   • GNU ‘texinfo’ 4.7 or later
> 
> Will all Texinfo versions supported for building glibc generate the
> desired INSTALL file?  If not, I think there should be some additional
> statement about versions to use when regenerating INSTALL.

Ack, I'll find that out and update this.

> For the versions that generate the UTF-8 INSTALL file, is the file
> generated independent of the locale used for the build (and, in
> particular, of whether that locale is a UTF-8 locale)?

It should follow @documentencoding, which we specify as UTF-8 in 
libc.texinfo.

Thanks,
Sid