add compiler/parallel/tcltk R libraries included in base installation to extensions in R 4.x easyconfigs using foss toolchain

[boegel]

(created using eb --new-pr)

Including these additional libraries in exts_list doesn't actually affect the installation at all, since they're always installed, even when not listed explicitly as extension.

The main motivation for doing this is to ensure that base R libraries that are listed as a required dependency for R libraries from CRAN are included in exts_list, which is required to be able to install the extensions in parallel (cfr. easybuilders/easybuild-framework#3667 and easybuilders/easybuild-easyblocks#2408).

(I'll open separate PRs for R easyconfigs using a fosscuda toolchain, and for older versions, to facilitate submitting test reports)

[boegel]

@boegelbot please test @ generoso
EB_ARGS="--skip"

[boegelbot]

@boegel: Request for testing this PR well received on login1

PR test command 'EB_PR=14189 EB_ARGS="--skip" /opt/software/slurm/bin/sbatch --job-name test_PR_14189 --ntasks=4 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 7136

Test results coming soon (I hope)...

- notification for comment with ID 948955388 processed

Message to humans: this is just bookkeeping information for me,
it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot
SUCCESS
Build succeeded for 5 out of 5 (5 easyconfigs in total)
cnx3 - Linux rocky linux 8.4, x86_64, Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz (haswell), Python 3.6.8
See https://gist.github.com/64be6812678c21354f973fd9d3095058 for a full test report.

[akesandgren]

LGTM

[akesandgren]

Going in, thanks @boegel!