revert parts concatination to not use io.Pipe
revert parts concatination to not use io.Pipe

MG-RAST/Shock,wgerlach/Shock,teharrison/Shock,MG-RAST/Shock,teharrison/Shock,teharrison/Shock,wgerlach/Shock,teharrison/Shock,wgerlach/Shock,teharrison/Shock,MG-RAST/Shock,MG-RAST/Shock,wgerlach/Shock,teharrison/Shock,MG-RAST/Shock,wgerlach/Shock