bug#43353: 28.0.50; "make check" fails if there are non-ASCII characters in the Emacs path

[Lars Ingebrigtsen]

To reproduce, check out the Emacs tree and then say

$ mv emacs émacs

or anything else with non-ASCII characters.

Then build Emacs as normal (this should work fine), and then say

$ make check

You should then see a ream of errors like

  ELC      src/regex-emacs-tests.elc
>>Error occurred processing src/marker-tests.el: File is missing (("Doing 
>>chmod" "No such file or directory" 
>>"/home/larsi/src/emacs/g\303\203\302\263o/test/src/marker-tests.elcMbSh7c"))

This is because test/Makefile puts a LC_ALL=C thing into the command
line.  (Which can be overridden by TEST_LOCALE (which will allow the
test .elc files to be built, but then a bunch of tests will fail anyway,
because a bunch of tests assume that we're in the C locale, apparently.)

In GNU Emacs 28.0.50 (build 58, x86_64-pc-linux-gnu, GTK+ Version 3.24.22, 
cairo version 1.16.0)
 of 2020-09-12 built on xo
Repository revision: 699e40caf634cea11350c59fc64ce5693d378cb4
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12008000
System Description: Debian GNU/Linux bullseye/sid


-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no