This patch adds an RVV-optimized implementation of strlen for RISC-V and enables it for both multiarch (IFUNC) and non-multiarch builds. The implementation integrates Hau Hsu's 2023 RVV work under a unified ifunc-based framework.
Extend the Prefer_No_AVX512 tuning to cover Hygon model 0x8. Benchmarks on Hygon platforms show that EVEX implementations are often more profitable than AVX512 paths.
Unlike older hosts database served by gethostbyname, getaddrinfo call can return varying return codes.