8253424: Add support for running pre-submit testing using GitHub Actions

8253865: Pre-submit testing using GitHub Actions does not detect failures reliably
8254054: Pre-submit testing using GitHub Actions should not use the deprecated set-env command
8254173: Add Zero, Minimal hotspot targets to submit workflow
8254175: Build no-pch configuration in debug mode for submit checks
8254282: Add Linux x86_32 builds to submit workflow
8255373: Submit workflow artifact name is always "test-results_.zip"
8255895: Submit workflow artifacts miss hs_errs/replays due to ZIP include mismatch
8256127: Add cross-compiled foreign architectures builds to submit workflow
8256277: Github Action build on macOS should define OS and Xcode versions
8256354: Github Action build on Windows should define OS and MSVC versions
8256414: add optimized build to submit workflow
8256393: Github Actions build on Linux should define OS and GCC versions
8256747: GitHub Actions: decouple the hotspot build-only jobs from Linux x64 testing
8257056: Submit workflow should apt-get update to avoid package installation errors
8259924: GitHub actions fail on Linux x86_32 with "Could not configure libc6:i386"
8260460: GitHub actions still fail on Linux x86_32 with "Could not configure libc6:i386"
8263667: Avoid running GitHub actions on branches named pr/*
8255305: Add Linux x86_32 tier1 to submit workflow
8255352: Archive important test outputs in submit workflow
8282225: GHA: Allow one concurrent run per PR only
8241768: git needs .gitattributes
8284772: 8u GHA: Use GCC Major Version Dependencies Only

Reviewed-by: shade
Backport-of: 10029f7

.gitattributes

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+*	-text