Revision 1329670

- Update syscall-names.list for Linux 4.18
- malloc: Verify size of top chunk
- malloc: Mitigate null-byte overflow attacks
- malloc: Additional checks for unsorted bin integrity I
- nscd: Fix use-after-free in addgetnetgrentX [BZ #23520]
- Add newlines in __libc_fatal calls [BZ #20271]
- Fix tzfile low-memory assertion failure [BZ #21716]
- Update kernel version in syscall-names.list to 4.19