Clean up snmpnetstat man page, removing some left over cruft man
original bsd netstat page.
snmpnetstat: fix usage message to be closer to reality. Fix handling of -Cp and -Cf options with new tables.
Merge branch 'V5-7-patches'

* V5-7-patches:
  snmpnetstat: fix usage message to be closer to reality. Fix handling of -Cp and -Cf options with new tables.
  Clean up snmpnetstat man page, removing some left over cruft man original bsd netstat page.
man/snmpps: speling eror
Win32: perl: Avoid transport initialization failure in Perl SNMP agents

Avoid that the followingn message is printed during startup of a Perl SNMP
agent:

netsnmp_assert s != (-1) failed ..\..\snmplib\transports\snmpUDPBaseDomain.c:484

See also commit 36a7de7230fbbbb52cc37cbbed281eb559404be9.
Merge branch 'V5-6-patches' into V5-7-patches

* V5-6-patches:
  Win32: perl: Avoid transport initialization failure in Perl SNMP agents

Conflicts:
	perl/SNMP/SNMP.xs
Win32: Unbreak the build (see also commit 253f90743)
Merge branch 'V5-7-patches'

* V5-7-patches:
  Win32: Unbreak the build (see also commit 253f90743)
  Win32: perl: Avoid transport initialization failure in Perl SNMP agents
Patch a1270: man page fixups (thnks Aleksandrs Saveljevs)
Merge branch 'V5-7-patches'

* V5-7-patches:
  Patch a1270: man page fixups (thnks Aleksandrs Saveljevs)
CHANGES: snmplib: Mark register_signal and unregister_signal as unused.
Merge branch 'V5-7-patches'

* V5-7-patches:
  CHANGES: snmplib: Mark register_signal and unregister_signal as unused.
Remove the old implementation of usmStats
Rename usmStats_5_5 to usmStats
CHANGES: snmpd: Remove the old implementation of snmpMPDStats
CHANGES: snmpd: Rename snmpMPDStats_5_5 to snmpMPDStats
CHANGES: snmpd: Remove the old implementation of snmp_mib
CHANGES: snmpd: Rename snmp_mib_5_5 to snmp_mib
CHANGES: snmpd: Remove the old implementation of target_counters
CHANGES: snmpd: Rename target_counters_5_5 to target_counters