[monitoring-plugins] Merge branch 'maint'

[Holger Weiss]

 Module: monitoring-plugins
 Branch: master
 Commit: 37928b52a59f80183004cc36b646aec5f9546ff5
 Author: Holger Weiss <holger at zedat.fu-berlin.de>
   Date: Thu Oct  8 12:52:10 2015 +0200
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=37928b5

Merge branch 'maint'

* maint:
  sslutils: Remove superfluous parenthesis for sslv3 function too
  sslutils: remove superfluous parenthesis
  check_snmp: modified tests
  check_snmp.c: switched DEFAULT_TIMEOUT to DEFAULT_SOCKET_TIMEOUT (provided by utils.h), already used by help description, see issue #1318
  install snmpd on travis tests
  enable libtab on travis builds
  add perl snmp to travis dependencies
  NEWS: Mention check_ups performance data fix
  Fix incorrect performance data thresholds
  check_dhcp: Fix option parsing
  Fixes segfaults when running via monitoring worker (off-by-one)
  travis: fix http test host
  sslutils: Check if OpenSSL supports SSLv3.

Conflicts:
	NEWS
	plugins/sslutils.c

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