use correct Matlab Runtime Compiler (v8.4) for FreeSurfer v7.1.1

[btlindert]

(created using eb --new-pr)

[Micket]

ok, i guess this looks good to me.
Normally, modifying existing easyconfigs is something to strive to avoid. Perhaps this is a case where the runtime version should be added as a suffix to the easyconfig, to allow it to be distinguished. Though, reading the homepage, it seems like it should have been version 8.4 all along? I'm not entirely sure here.

[Micket]

any opinion on this @sassy-crick ?

[sassy-crick]

Looking at the documentation it looks like the correct MCR is 8.4. I guess that would qualify as a patch-fix. There was no particular reason for me to pick the older version, I probably have just used the already existing EC file as a template and did not dig any deeper as it all was "working" for me.
Maybe we should add a comment that the MCR and FeeSurfer versions are linked?

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 3 out of 3 (3 easyconfigs in total)
node3100.skitty.os - Linux RHEL 8.4, x86_64, Intel(R) Xeon(R) Gold 6140 CPU @ 2.30GHz (skylake_avx512), Python 3.6.8
See https://gist.github.com/edecbbe2784e78d86a060d4aa2855e46 for a full test report.

[boegel]

lgtm

[boegel]

Going in, thanks @btlindert!