Add patch to fix GCC 10.2.0 rejecting valid code on PPC

[Flamefire]

(created using eb --new-pr)

Found during compilation of TF 2.5.0.
See https://gitlab.com/libeigen/eigen/-/issues/2259

Reproducer:

$ cat vecParam.cpp 
void ploadRhsMMA(__vector_pair&){}
int main(){
  __vector_pair p;
  ploadRhsMMA(p);
}

Compile as g++ vecParam.cpp.
Prior to this patch it will show: "error: invalid conversion from type '* __vector_pair'"

[boegel]

@boegelbot please test @ generoso
CORE_CNT=16
EB_ARGS="--installpath /tmp/$USER"

[boegelbot]

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

PR test command 'EB_PR=12948 EB_ARGS="--installpath /tmp/$USER" /apps/slurm/default/bin/sbatch --job-name test_PR_12948 --ntasks="16" ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 17304

Test results coming soon (I hope)...

- notification for comment with ID 847842864 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).

[Flamefire]

Test report by @Flamefire
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in total)
taurusml1 - Linux RHEL 7.6, POWER, 8335-GTX (power9le), Python 2.7.5
See https://gist.github.com/25810beabf40bfce7ae606e09ffc6c0a for a full test report.

[boegelbot]

Test report by @boegelbot
SUCCESS
Build succeeded for 3 out of 3 (1 easyconfigs in total)
generoso-x-1 - 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/45cb39b85885865b43f1b772577de81c for a full test report.

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in total)
select-pika-c6gd-2xlarge-0001 - Linux centos linux 8.3.2011, AArch64, ARM UNKNOWN (graviton2), Python 3.6.8
See https://gist.github.com/a2ed4a5499b5560878c8f452036a07e1 for a full test report.

[boegel]

lgtm

[boegel]

Test report by @boegel
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in total)
easybuild2.novalocal - Linux centos linux 8.3.2011, POWER, IBM pSeries (emulated by qemu) (power9le), Python 3.6.8
See https://gist.github.com/b6f5074948e261c3c4e6a9fb3c36d87a for a full test report.

edit: even though this test report was uploaded with eb --module-only, it does represent a successful rebuild of GCCcore/10.2.0 on POWER9. And I've verified that the minimal test case indeed compiles properly now.

[boegel]

Going in, thanks @Flamefire!