Issue #3080: Add PyImport_ImportFrozenModuleObject()

find_frozen(), get_frozen_object(), is_frozen_package() and other functions
related to frozen modules use Unicode strings instead of byte strings.
diff --git a/Doc/c-api/import.rst b/Doc/c-api/import.rst
index bcf5def..c9556b6 100644
--- a/Doc/c-api/import.rst
+++ b/Doc/c-api/import.rst
@@ -217,7 +217,7 @@
    For internal use only.
 
 
-.. c:function:: int PyImport_ImportFrozenModule(char *name)
+.. c:function:: int PyImport_ImportFrozenModuleObject(PyObject *name)
 
    Load a frozen module named *name*.  Return ``1`` for success, ``0`` if the
    module is not found, and ``-1`` with an exception set if the initialization
@@ -225,6 +225,14 @@
    :c:func:`PyImport_ImportModule`.  (Note the misnomer --- this function would
    reload the module if it was already imported.)
 
+   .. versionadded:: 3.3
+
+
+.. c:function:: int PyImport_ImportFrozenModule(char *name)
+
+   Similar to :c:func:`PyImport_ImportFrozenModuleObject`, but the name is an
+   UTF-8 encoded string instead of a Unicode object.
+
 
 .. c:type:: struct _frozen