use our implementation of File not the traits one
use our implementation of File not the traits one

git-svn-id: 24f545668198cdd163a527378499f2123e59bf9f@1475 ead46cd0-7350-4e37-8683-fc4c6f79bf00

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