zstd: update to 1.5.6 + disable unnecessary features

koreader / koreader-base

Base framework offering a Lua scriptable environment for creating document readers

http://koreader.rocks/

GNU Affero General Public License v3.0

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Closed benoit-pierre closed 1 month ago

benoit-pierre commented 1 month ago

Disabled features:

multi-threaded support: not used (and already off by default on Android)
legacy support: drop support for decompressing files created with versions older than 0.8.0 (2016, initial version when support was integrated: 1.4.5)

Reduce library code size by ~107-189 KB.

This change is