Re: MesaLib

[Taylor R Campbell <campbell+netbsd-tech-x11%mumble.net@localhost>]

> Date: Mon, 17 Jul 2023 00:27:16 +0100
> From: Robert Swindells <rjs%fdy2.co.uk@localhost>
> 
> I have committed some changes to MesaLib to get it to build, not changed
> anything in src/share/mk so MesaLib.old will still be built by default.


This appears to have broken a bunch of builds:

https://releng.netbsd.org/builds/HEAD/202307161310Z/

E.g., from the amd64 complete log:

cleandir ===> external/mit/xorg/lib/libEGL.old
cd: can't cd to /home/source/ab/HEAD/src/external/mit/xorg/lib/libEGL.old

Can you please take a look and fix the fallout?