Commits on Sep 5, 2024

1. Publish header with toolchain versions …

   This change is an attempt to resolve [wasi-libc#490] but at the wasi-sdk
   level. It adds a `version.h` header file to
   `share/wasi-sysroot/include/<target>/wasi` so that users have
   programmatic access to some extra information to output better error
   messages, e.g. This `version.h` looks something like:
   
     ```c
     // Generated by wasi-sdk's `version.py` script.
     #ifndef VERSION_H
     #define VERSION_H
   
     #define WASI_SDK_VERSION "24.6g754aec3d6f58+m"
     #define WASI_LIBC_VERSION "b9ef79d7dbd4"
   
     #endif
     ```
   
   It _is_ a bit strange that we're adding to wasi-libc's include files
   from wasi-sdk (it would be cleaner if it happened in wasi-libc directly)
   but wasi-sdk actually has the information available.
   
   [wasi-libc#490]: WebAssembly/wasi-libc#490

   

   abrown committed Sep 5, 2024
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