Log Message:
chkrootkit: Update to 0.58b

pkgsrc changes:
---------------
  * Update to latest release.
  * Update MASTER_SITES.

upstream changes:
-----------------
10/13/2016 - Version 0.51 Mumblehard backdoor/botnet detection
  Linux.Xor.DDoS Malware
  Malicious TinyDNS detection
  Backdoors.Linux.Mokes.a detection
  Minor bug fixes

13/03/2017 - Version 0.52 Linux.Proxy.10 detection
  strings.c & chkutmp.c bug fixes

01/25/2019 - Version 0.53 Rocke Monero Miner detection
  Added ss support
  ifconfig.c bug fixes
  Minor bug fixes

12/24/2020 - Version 0.54 PWNLNX4 and 6 Rootkits detection
  BTRFS bug fix
  Fedora bug fix
  Bug fix release

06/10/2021 - Version 0.55 Umbreon Linux Rootkit detection
  Kinsing.A Backdoor
  RotaJakito Backdoor
  Minor bug fixes

12/22/2022 - Version 0.56 Kovid rootkit
  Syslogk rootkit
  Minor bug fixes

01/13/2023 - Version 0.57 bug fix release

06/29/2023 - Version 0.58
  New option to avoid scanning network filesystems (-T)
  Linux BPFDoor Malware
  Minor buf fixes