unsupported linker arg: -dead_strip

[cstkingkey]

Zig Version

0.10.0-dev.990+058e48224

Steps to Reproduce

see also #10485

Expected Behavior

support linker arg -dead_strip

Actual Behavior

unsupported.

[matu3ba]

Note: -dead_strip is only supported by lld and ld on Darwin. https://stackoverflow.com/a/6687734