added aggregate_outputs to datagrabber to allow changing output types to list(file) or file
added aggregate_outputs to datagrabber to allow changing output types to list(file) or file

git-svn-id: 24f545668198cdd163a527378499f2123e59bf9f@1317 ead46cd0-7350-4e37-8683-fc4c6f79bf00

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