added substitution option to datasink
added substitution option to datasink

git-svn-id: 24f545668198cdd163a527378499f2123e59bf9f@1847 ead46cd0-7350-4e37-8683-fc4c6f79bf00

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