06 Feb 2014 M.Fuerstenau version 0.9.7
  - Bugfixes/Enhancements
    - In some cases it might happen that no performance counters are delivered
      by VMware. Especially if the version is old (4.x, 3.x). Under these
      circumstances an undef was returned by the routines from process_perfdata.pm
      and not handled correctly in the calling subroutines. Fixed.
      Affected subroutines:
      - host_cpu_info()
      - vm_net_info()
      - vm_mem_info()
      - vm_net_info()
      - vm_disk_io_info()
      - vm_cpu_info()
      - host_net_info()
      - host_mem_info()
      - host_disk_io_info()
  - vm_net_info()
    - Rewritten to the same structure as similar modules
  - host_net_info()
    - Rewritten to the same structure as similar modules
modified:   HISTORY
modified:   check_vmware_esx.pl
modified:   modules/host_cpu_info.pm
modified:   modules/host_disk_io_info.pm
modified:   modules/host_mem_info.pm
modified:   modules/host_net_info.pm
modified:   modules/vm_cpu_info.pm
modified:   modules/vm_disk_io_info.pm
modified:   modules/vm_mem_info.pm
modified:   modules/vm_net_info.pm