use "code_info" in par file consistently

instead of bfps_info or TurTLE_info.

TurTLE/DNS.py

@@ -445,7 +445,7 @@ class DNS(_code):
             assert (self.parameters['niter_out']  % self.parameters['niter_part'] == 0)
         _code.write_par(self, iter0 = iter0)
         with h5py.File(self.get_data_file_name(), 'r+') as ofile:
-            ofile['TurTLE_info/exec_name'] = self.name
+            ofile['code_info/exec_name'] = self.name
             kspace = self.get_kspace()
             for k in kspace.keys():
                 ofile['kspace/' + k] = kspace[k]

TurTLE/TEST.py

@@ -167,7 +167,7 @@ class TEST(_code):
         assert (iter0 == 0)
         _code.write_par(self, iter0 = iter0)
         with h5py.File(self.get_data_file_name(), 'r+') as ofile:
-            ofile['TurTLE_info/exec_name'] = self.name
+            ofile['code_info/exec_name'] = self.name
             kspace = self.get_kspace()
             for k in kspace.keys():
                 ofile['kspace/' + k] = kspace[k]

TurTLE/_base.py

@@ -172,8 +172,8 @@ class _base(object):
             else:
                 ofile['parameters/' + k] = self.parameters[k]
         ofile['iteration'] = int(iter0)
-        ofile['bfps_info/solver_class'] = type(self).__name__
-        ofile['bfps_info/VERSION'] = __version__
+        ofile['code_info/solver_class'] = type(self).__name__
+        ofile['code_info/VERSION'] = __version__
         ofile.close()
         return None
     def rewrite_par(