This clarifies operator precedence, and quiets cppcheck in
the Kernel Test Robot. I think this is a slight bonus to
readability, so I am accepting the suggestion.

Silence warnings reported by Kernel Test Robot

[tests] Don't write to stdout

Fix Compression Parameter Derivation Bugs Introduced by DDSS Changes

Separate Long Tests in Fuzzer

Even if the discrepancies are at the moment benign, it's probably better to
standardize on using the one true initializer, rather than trying (and failing)
to correctly duplicate its behavior.

Rewrite ZSTD_createCDict_advanced() as a wrapper around
ZSTD_createCDict_advanced2(). Evaluate whether to use DDSS mode *after* fully
resolving cparams. If not, fall back.

Call ZSTD_getCParamsFromCCtxParams() instead of ZSTD_getCParams_internal().

[contrib][linux-kernel] Add decompress_sources.h

Make multifile (de)compression print out a summary

Allow environment variable to specify number of threads for compression

check endDirective in ZSTD_compressStream2()

Add decompress_sources.h, which includes all the decompression .c files.
This is used for kernel decompression.

Also, add a test which checks that including decompress_sources.h works.

fix #2297
also :
- `assert()` `endDirective` in `ZSTD_compressStream_internal()`, for debug mode
- add relevant tests

DDSS for Lazy: Implement a Dedicated Dictionary Chain Table

This is kind of hacky. And maybe this test doesn't need to be permanently as
exhaustive as it is now. But while we're actively developing the DDSS, we
should ensure it's compatible across many different modes.