cleaned more of the engine code - handles node failures in distributed mode
cleaned more of the engine code - handles node failures in distributed mode

git-svn-id: 24f545668198cdd163a527378499f2123e59bf9f@772 ead46cd0-7350-4e37-8683-fc4c6f79bf00

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