llama.cpp Release b9415 Adds `skip_download` Option and macOS Apple Silicon Support

Core summary

One sentence to understand this update

llama.cpp release b9415 introduces a `skip_download` option and improves support for macOS Apple Silicon (arm64) devices, including KleidiAI.

Impact & opportunity

What this could mean

This update enhances flexibility for developers managing downloads and improves performance for llama.cpp users on Apple's M-series chips.