refined cleanup of parallel runtime objects
refined cleanup of parallel runtime objects

mick-d/nipype_source,iglpdc/nipype,pearsonlab/nipype,grlee77/nipype,arokem/nipype,gerddie/nipype,carolFrohlich/nipype,JohnGriffiths/nipype,fprados/nipype,mick-d/nipype_source,pearsonlab/nipype,pearsonlab/nipype,iglpdc/nipype,grlee77/nipype,iglpdc/nipype,gerddie/nipype,glatard/nipype,gerddie/nipype,arokem/nipype,dmordom/nipype,blakedewey/nipype,mick-d/nipype,rameshvs/nipype,arokem/nipype,gerddie/nipype,carolFrohlich/nipype,sgiavasis/nipype,glatard/nipype,mick-d/nipype,Leoniela/nipype,grlee77/nipype,blakedewey/nipype,rameshvs/nipype,FCP-INDI/nipype,dgellis90/nipype,sgiavasis/nipype,dgellis90/nipype,pearsonlab/nipype,dgellis90/nipype,fprados/nipype,mick-d/nipype,carolFrohlich/nipype,wanderine/nipype,glatard/nipype,FCP-INDI/nipype,glatard/nipype,FredLoney/nipype,rameshvs/nipype,rameshvs/nipype,iglpdc/nipype,christianbrodbeck/nipype,carlohamalainen/nipype,grlee77/nipype,dmordom/nipype,carlohamalainen/nipype,FredLoney/nipype,JohnGriffiths/nipype,wanderine/nipype,FCP-INDI/nipype,dgellis90/nipype,blakedewey/nipype,christianbrodbeck/nipype,FredLoney/nipype,dmordom/nipype,fprados/nipype,blakedewey/nipype,carlohamalainen/nipype,sgiavasis/nipype,Leoniela/nipype,mick-d/nipype,carolFrohlich/nipype,FCP-INDI/nipype,arokem/nipype,sgiavasis/nipype,wanderine/nipype,JohnGriffiths/nipype,Leoniela/nipype,wanderine/nipype,JohnGriffiths/nipype,mick-d/nipype_source