i#5505 kernel memtrace: Add submodule libipt & Initialize submodules all the time

[dolanzhao]

• Add libipt as a submodule
• Tell GA CI to init submodules: submodules: true arg to checkout step
• Add submodule update to make/git/devsetup.sh
• Add submodule update to make/git/git_pullall.sh
• Update how-to-build docs

Issue: #5505

[dolanzhao]

#5515 (comment)

Potentially add a pre-commit hook to prevent the common mistake of accidentally rolling back a recent submodule update when switching branches

@derekbruening Could you explain this point in details?

[derekbruening]

#5515 (comment)

Potentially add a pre-commit hook to prevent the common mistake of accidentally rolling back a recent submodule update when switching branches

@derekbruening Could you explain this point in details?

If you check out the drmemory repo and do "git grep submodule" you will see all the support it has: it is part of make/git/hook-pre-commit.sh that looks useful for the DR repo.

[abhinav92003]

Thanks for addressing the comments! In addition to commenting "done" in each conversation (which you did), please also click on the "resolve conversation" button so that it doesn't show up anymore.

[dolanzhao]

Thanks for addressing the comments! In addition to commenting "done" in each conversation (which you did), please also click on the "resolve conversation" button so that it doesn't show up anymore.

OK. Thanks!

[abhinav92003]

run arm tests