The following have been renamed for consistency with the rest of expl3:
the old names will be removed after 2012-12-31:
\l_iow_line_length_int => \l_iow_line_count_int
\ior_to:NN => \ior_get:NN
\ior_str_to:NN => \ior_get_str:NN
The following have been deprecated with the same removal date:
and should be replaced by \ior_get(_str):NN to a local token list
variable followed by use of \tl_gset_eq:NN.