use filter_var instead of regex for ip-addresses

Florian Schaal

2016-01-09 db206906cba345df476686b1678fdda29632cdd1

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/^\s*(LoadModule|LoadFile|Include)(\s+|[\\\\])/mi
/^\s*(SuexecUserGroup|suPHP_UserGroup|suPHP_PHPPath|suPHP_ConfigPath)(\s+|[\\\\])/mi
/^\s*(FCGIWrapper|FastCgiExternalServer)(\s+|[\\\\])/mi