Merge pull request #2900 from BenjaminMey/BenjaminMey-FNIRT-outputs

[FIX] Update FNIRT outputs for warped_file log_file to include cwd

Author: mgxd

nipype/interfaces/fsl/preprocess.py

@@ -1160,7 +1160,7 @@ def _list_outputs(self):
                 if suffix.endswith('.txt'):
                     change_ext = False
                 if isdefined(inval):
-                    outputs[key] = inval
+                    outputs[key] = os.path.abspath(inval)
                 else:
                     outputs[key] = self._gen_fname(
                         self.inputs.in_file,