Repository has non-UTF8 names, creating issues with certain file systems

[Mike Swanson]

I know it’s not, strictly speaking, a bug, but it is common in ZFS
installations to set utf8only=on to enforce that all file names are
strictly UTF-8, and this causes an issue when trying to clone the Git
repository for texinfo on a ZFS system with that feature enabled:

$ git clone https://git.savannah.gnu.org/git/texinfo.git      
Cloning into 'texinfo'...
remote: Counting objects: 309619, done.
remote: Compressing objects: 100% (31556/31556), done.
remote: Total 309619 (delta 268532), reused 309233 (delta 268267)
Receiving objects: 100% (309619/309619), 143.69 MiB | 4.56 MiB/s, done.
Resolving deltas: 100% (268532/268532), done.
error: unable to create file tp/tests/included_lat�n1.texi: Invalid or
incomplete multibyte or wide character

I’m not sure for what purpose the file is in the repository, but it
might be worth considering writing out non-UTF8 tests dynamically at
build or runtime provided that the host operating system supports such
names.