Auto-sync with upstream branch release/2.28/master
    
    Upstream commit: f44c2ca5eacd2df76fc38be75f9ebb8f0ff555eb
    
    - Update system call list to Linux 4.19
    - time: Fix tzfile low-memory assertion failure (swbz#21716)
    - Add newlines in __libc_fatal calls (swbz#20271)
    - nscd: Fix use-after-free in addgetnetgrentX (swbz#23520)
    - malloc: Additional heap integrity checks
    - Add an additional test to resolv/tst-resolv-network.c (swbz#17630)