add patch to fix installation of LAMMPS 7Aug2019 on AMD Epyc systems

[hajgato]

see easybuilders/easybuild-easyblocks#1975 (comment)

[boegel]

@boegelbot please test @ generoso

[boegel]

lgtm

[boegelbot]

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

PR test command 'EB_PR=11334 EB_ARGS= /apps/slurm/default/bin/sbatch --job-name test_PR_11334 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 7894

Test results coming soon (I hope)...

- notification for comment with ID 697951004 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)
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/769b49213320662159cd64c523c6cc2c for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 2 out of 2 (2 easyconfigs in this PR)
node3415.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/9c8b12658a356a95a0b15ba8a9184548 for a full test report.

[boegelbot]

Test report by @boegelbot
SUCCESS
Build succeeded for 2 out of 2 (2 easyconfigs in this PR)
generoso - 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/f23e66178f25f5d28d440980c365f28e for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 2 out of 2 (2 easyconfigs in this PR)
node2604.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/ae9225d3f50e5501843c41a74305a2c6 for a full test report.

[boegel]

Going in, thanks @hajgato!