update patches

[sachintu47]

No description provided.

[sachintu47]

augment review

[augmentcode]

🤖 Augment PR Summary

Summary: Updates the zstd port to a newer upstream release and refreshes the local patch set used for z/OS builds.

Changes:

• Bumped bundled zstd version from 1.5.5 to 1.5.7 in buildenv
• Expanded build dependencies to include additional tooling (diffutils, which)
• Generalized .gitignore to ignore extracted zstd source directories via zstd*/
• Removed older patch files and consolidated Makefile-related adjustments into patches/addzostomakefile.patch
• Updated Makefile patches to recognize OS/390 and to include library variables during link steps (LIBS/LDLIBS)
• Refreshed the tests Makefile patch to pass LDLIBS through more link commands and adjust include flag handling

Technical Notes: The patch set continues to tailor upstream build/install logic for the z/OS toolchain and environment, including platform detection and link-line library propagation.

_{🤖 Was this summary useful? React with 👍 or 👎}

[augmentcode]

Review completed. 1 suggestion posted.

Comment augment review to trigger a new review at any time.

[augmentcode]

platform.h is documented upstream as needing to be included first (e.g., for large-file/feature macros), but this patch moves it (and in one case util.h) after system headers in several translation units, which can cause subtle ABI/IO issues. Consider keeping these headers first (or ensuring the required macros are provided via compiler flags) to preserve the intended behavior.

Severity: medium

Other Locations

• patches/assertfirst.patch:36
• patches/assertfirst.patch:58
• patches/assertfirst.patch:77
• patches/assertfirst.patch:95

_{🤖 Was this useful? React with 👍 or 👎, or 🚀 if it prevented an incident/outage.}