Keep track of a stack of fake suite objects to fake out the test.parent.
Keep track of a stack of fake suite objects to fake out the test.parent.

Some reporters (e.g. xunit) look into test.parent, so keep a simple stack
of the fake test suite objects and set the parent reference appropriately.

ttrfwork/grunt-mocha,skohar/grunt-mocha,jkennedy1980/grunt-mocha,GruntBlanketMocha/grunt-blanket-mocha,jkennedy1980/grunt-mocha,skohar/grunt-mocha,philschatz/grunt-blanket-mocha,ModelN/grunt-blanket-mocha,Betterment/grunt-blanket-mocha,strycore/grunt-blanket-mocha,scotthogan/grunt-mocha-phantom-istanbul,4lejandrito/grunt-blanket-mocha,scotthogan/grunt-mocha-phantom-istanbul,ryan-roemer/grunt-blanket-mocha,4lejandrito/grunt-blanket-mocha,kmiyashiro/grunt-mocha,kmiyashiro/grunt-mocha,ModelN/grunt-blanket-mocha,GruntBlanketMocha/grunt-blanket-mocha