Zig 0.17 released with reworked build system and new ELF linker

Zig 0.17 ships a new ELF linker with full x86_64 and SPARC64 support, improved incremental compilation for x86_64 Linux, and a build system split into separate configuration and execution processes. The binary cache is about 25% smaller with 5–10% faster cache hits, and @cImport has been removed.

• New ELF linker: full x86_64 and SPARC64 support, partial LoongArch
• Incremental compilation now works with watch mode on x86_64 Linux
• Binary cache about 25% smaller, cache hits 5–10% faster
• @cImport removed; C-to-Zig translation moves to external translate-c package