Auto-sync with upstream branch master
    
    Upstream commit: 64f63cb4583ecc1ba16c7253aacc192b6d088511
    
    - Enable static PIE support
    - Remove add-on support (already gone upstream)
    - Rework test suite status reporting
    - malloc: Fix integer overflows in memalign and malloc functions (swbz#22343)
    - x86-64: Properly align La_x86_64_retval to VEC_SIZE (swbz#22715)
    - aarch64: Update bits/hwcap.h for Linux 4.15
    - Add NT_ARM_SVE to elf.h