fix source URLs and add alternative checksum for Hypre 2.15.1 (since it moved to a different GitHub repo)

[Flamefire]

(created using eb --new-pr)

[branfosj]

@boegelbot please test @ generoso
EB_ARGS="--sourcepath=/tmp/13616"

[branfosj]

Test report by @branfosj
SUCCESS
Build succeeded for 1 out of 1 (1 easyconfigs in total)
bear-pg0211u03a.bear.cluster - Linux RHEL 8.3, x86_64, Intel(R) Xeon(R) Gold 6248 CPU @ 2.50GHz (cascadelake), Python 3.6.8
See https://gist.github.com/42111e1a0012e2d510735e86c8091773 for a full test report.

[boegelbot]

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

PR test command 'EB_PR=13616 EB_ARGS="--sourcepath=/tmp/13616" /apps/slurm/default/bin/sbatch --job-name test_PR_13616 --ntasks=4 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 17908

Test results coming soon (I hope)...

Details

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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 2 out of 2 (2 easyconfigs in total)
generoso-c1-s-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/2dcb84a482ac964073775597d15a155e for a full test report.

[branfosj]

For reference, the difference between the old and new v2.15.1.tar.gz is:

$ diff -r hypre-2.15.1-{old,new}
Only in hypre-2.15.1-old: docs
Only in hypre-2.15.1-old/src/examples: README_files
Only in hypre-2.15.1-old/src/examples: README.html

[branfosj]

lgtm

[branfosj]

Going in, thanks @Flamefire!