python/py-utils.c (host_string_to_python_string): New function.

gdb/ChangeLog:

	* python/py-utils.c (host_string_to_python_string): New function.
	* python/python-internal.h (host_string_to_python_string): Declare it.
	* python/py-*.c (*): Update all calls to
	PyString_Decode (str, strlen (str), host_charset (), NULL);
	to use host_string_to_python_string instead.

gdb/python/py-objfile.c

@@ -78,9 +78,7 @@ objfpy_get_filename (PyObject *self, void *closure)
   objfile_object *obj = (objfile_object *) self;
 
   if (obj->objfile)
-    return PyString_Decode (objfile_name (obj->objfile),
-			    strlen (objfile_name (obj->objfile)),
-			    host_charset (), NULL);
+    return host_string_to_python_string (objfile_name (obj->objfile));
   Py_RETURN_NONE;
 }
 
@@ -96,8 +94,7 @@ objfpy_get_username (PyObject *self, void *closure)
     {
       const char *username = obj->objfile->original_name;
 
-      return PyString_Decode (username, strlen (username),
-			      host_charset (), NULL);
+      return host_string_to_python_string (username);
     }
 
   Py_RETURN_NONE;
@@ -152,8 +149,7 @@ objfpy_get_build_id (PyObject *self, void *closure)
       char *hex_form = make_hex_string (build_id->data, build_id->size);
       PyObject *result;
 
-      result = PyString_Decode (hex_form, strlen (hex_form),
-				host_charset (), NULL);
+      result = host_string_to_python_string (hex_form);
       xfree (hex_form);
       return result;
     }