+
added command/option list-sccb with function void duf_list_sccb(int)

added error DUF_ERROR_OPTION_NO_FUNC
codeforming

implementing sccb_handle with --enable-sccbhandle for ./configure
codeforming

implementing sccb_handle with --enable-sccbhandle for ./configure
commands list-targ, clear-targ