name_template for ToEcat interface.

The old code generated an output file in the directory of the input
file, which is probably not how we want to do things. (Refer
to Satra's comment about copyFile on the PR).

Author: carlohamalainen

nipype/interfaces/minc/minc.py

@@ -509,7 +509,10 @@ class ToEcatInputSpec(CommandLineInputSpec):
         mandatory=False,
         genfile=True,
         argstr='%s',
-        position=-1,)
+        position=-1,
+        name_source=['input_file'],
+        hash_files=False,
+        name_template='%s_to_ecat.v')
 
     ignore_patient_variable = traits.Bool(
         desc='Ignore informations from the minc patient variable.',
@@ -571,25 +574,6 @@ class ToEcat(CommandLine):
     output_spec = ToEcatOutputSpec
     _cmd = 'minctoecat'
 
-    def _gen_outfilename(self):
-        """
-        If the user specified output_file then return that, otherwise
-        return the full path to the input file with the extension
-        changed to '.v'.
-        """
-
-        output_file = self.inputs.output_file
-
-        if isdefined(output_file):
-            return output_file
-        else:
-            return os.path.splitext(self.inputs.input_file)[0] + '.v'
-
-    def _list_outputs(self):
-        outputs = self.output_spec().get()
-        outputs['output_file'] = os.path.abspath(self._gen_outfilename())
-        return outputs
-
 
 class DumpInputSpec(StdOutCommandLineInputSpec):
     input_file = File(