Merge branch 'windows/build' into windows/online

test=develop

python/paddle/fluid/layers/io.py

@@ -347,10 +347,8 @@ def _copy_reader_create_op_(block, op):
     return new_op
 
 
-if os.name != 'nt':
-
-    @templatedoc(op_type='create_recordio_file_reader')
-    def open_recordio_file(filename,
+@templatedoc(op_type='create_recordio_file_reader')
+def open_recordio_file(filename,
                        shapes,
                        lod_levels,
                        dtypes,