The C definitions of ZSTD_get1BlockSummary() and ZSTD_resetSeqStore()
only forwarded their arguments to Rust, so they duplicated the ABI boundary
without contributing assertions, private-state adaptation, or C-only policy.
Make Rust provide the existing internal symbols directly and remove only the
corresponding C declarations and forwarding bodies. Keep crate-local aliases
for the current compressor-module imports; they are Rust name aliases and do
not add the former ABI symbols back. No other statistics leaf is included.
Test Plan:
- `ulimit -v 41943040; cc -Ilib -Ilib/common -Ilib/compress -Ilib/decompress -Ilib/dictBuilder -Ilib/legacy -Ilib/deprecated -Ilib/zstd -fsyntax-only lib/compress/zstd_compress.c` -- passed
- `ulimit -v 41943040; cargo +nightly fmt --manifest-path rust/Cargo.toml --all -- --check` -- passed
- `git diff --check` and `git diff --cached --check` -- passed
- No cargo builds, make commands, or tests run, per request
ddidderr
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