• Fix : In response to test report 548152 :
  Newx() and SvMAGIC_set() not present on older perls.
  
• Fix : In response to test report 548275 :
  Since perl 5.9.5, 'clear' magic is invoked when an array is
  undefined (bug #43357). Moreover, 'len' magic is no longer
  called by pushing an element since perl 5.9.3.
  
• Fix : Missing glob test in MANIFEST.