fix Multiwfn 3.6 installation on RHEL8

[hajgato]

see #11394

There is no https version of the homepage (it is in China)

[boegel]

@boegelbot please test @ generoso

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 2 out of 2 (2 easyconfigs in this PR)
node3404.kirlia.os - Linux centos linux 7.8.2003, x86_64, Intel(R) Xeon(R) Gold 6240 CPU @ 2.60GHz (cascadelake), Python 2.7.5
See https://gist.github.com/72d2c198ed230c461ab2b034f68493b7 for a full test report.

[boegelbot]

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

PR test command 'EB_PR=11402 EB_ARGS= /apps/slurm/default/bin/sbatch --job-name test_PR_11402 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 7986

Test results coming soon (I hope)...

Details

- notification for comment with ID 700741998 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).

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 2 out of 2 (2 easyconfigs in this PR)
node2633.swalot.os - Linux centos linux 7.8.2003, x86_64, Intel(R) Xeon(R) CPU E5-2660 v3 @ 2.60GHz (haswell), Python 2.7.5
See https://gist.github.com/16ed7912894b5940ed2078bf7124abff for a full test report.

[boegelbot]

Test report by @boegelbot
SUCCESS
Build succeeded for 2 out of 2 (2 easyconfigs in this PR)
generoso-x-4 - Linux centos linux 8.2.2004, x86_64, Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz (haswell), Python 3.6.8
See https://gist.github.com/8e9236127e56cfc45dffe005399f7346 for a full test report.

[smoors]

Test report by @smoors
SUCCESS
Build succeeded for 2 out of 2 (2 easyconfigs in this PR)
node376.hydra.os - Linux centos linux 7.7.1908, x86_64, Intel(R) Xeon(R) Gold 6148 CPU @ 2.40GHz (skylake_avx512), Python 2.7.5
See https://gist.github.com/b23b9fa87167936467a39de3473d00f1 for a full test report.

[smoors]

lgtm

[smoors]

Going in, thanks @hajgato!