Auto-sync with upstream branch release/2.29/master
    
    Upstream commit: a318448f7aca169f7795d9d300c525d96f914af0
    
    - Fix array overflow in backtrace on PowerPC (bug 25423)
    - Fix use-after-free in glob when expanding ~user (bug 25414)
    - math/test-sinl-pseudo: Use stack protector only if available
    - Avoid ldbl-96 stack corruption from range reduction of pseudo-zero (bug 25487).
    - riscv: Do not use __has_include__