Which combined tarballs have gm2?

[john o goyo]

Gaius:

I downloaded the tarball gcc-9.2.0+gm2-20210316.tar.gz 
<http://floppsie.comp.glam.ac.uk/download/c/gcc-9.2.0+gm2-20210316.tar.gz> 
but no gm2.
Oddly, the size dropped 18MiB in December.  Is that when gm2 became shy?

gcc-9.2.0+gm2-20200602.tar.gz  2020-06-02 13:02 138MiB
gcc-9.2.0+gm2-20201217.tar.gz  2020-12-17 17:22 120MiB
gcc-9.2.0+gm2-20210316.tar.gz  2021-03-16 03:53 120MiB
gcc-9.2.0+gm2-git-latest.tar.gz    2021-02-09 12:05 139MiB

Sincerely,
john