zstd @1.3.4: opportunistically links with libz, liblz4, liblzma

[ryandesign (Ryan Carsten Schmidt)]

When not using the universal variant, zstd will link with libz, liblz4 and liblzma if they are present:

$ port deps zstd
zstd @1.3.4_0 has no dependencies.
$ otool -L /opt/local/bin/zstd
/opt/local/bin/zstd:
	/opt/local/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.11)
	/opt/local/lib/liblzma.5.dylib (compatibility version 8.0.0, current version 8.4.0)
	/opt/local/lib/liblz4.1.dylib (compatibility version 1.0.0, current version 1.8.2)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1238.60.2)

The zstd port should declare dependencies on the zlib, lz4 and xz ports and make their use explicit via configure args.

Or, if the use of these libraries is not desired, the port must ensure they are not used, even if they are installed.

Whichever solution is chosen, the revision will need to be increased.

[seanfarley (Sean Farley)]

Ah, didn't realize that. I think zstd should just declare those dependencies.

[ryandesign (Ryan Carsten Schmidt)]

​https://github.com/macports/macports-ports/pull/3028

[ryandesign (Ryan Carsten Schmidt)]

In 815d231e23039f491eaea1b7c52d20bb7f7ede5a/macports-ports (master):

zstd: Update to 1.3.7

Closes: #57597

Add dependencies on lz4, xz, and zlib, which were previously linked
opportunistically.

Closes: #56645

Fix detection of pthread, lz4, xz, and zlib when building universal.

Closes: #56646

Add a patch to fix compilation on i386.

Closes: #57544

Enable tests.