Fixed bug introduced in 2ef040d9
New tests for valid and useless pathrestriction.
For manual call of perlcritic
v3.031

 - Fixed check for useless pathrestriction inside security zone.
 - Fixed check for unenforceable rules between security zone with
   pathrestriction at unmanaged device.
 - Fixed syntax check for aggregate.
 - netspoc now reads from stdin, if no arg is given.
   Filename "-" for reading stdin isn't supported any longer.
 - Fixed performance and tests for perl5.18.0.