Auto-sync with upstream branch master
    
    Upstream commit: cccb6d4e87053ed63c74aee063fa84eb63ebf7b8
    
    - sigwait can fail with EINTR (#1516394)
    - Add memfd_create function
    - resolv: Fix p_secstodate overflow handling (swbz#22463)
    - resolv: Obsolete p_secstodate
    - Avoid use of strlen in getlogin_r (swbz#22447)
    - lv_LV locale: fix collation (swbz#15537)
    - S390: Add cfi information for start routines in order to stop unwinding
    - aarch64: Optimized memset for falkor