tcl_tk looks like it is a combination of the tcl and tk extensions already in the tc-4.x and tc-5.x repos, is this correct? If so, we might as well change the dep from tcl_tk to tcl and tk for usb-modeswitch.
libssl-0.9.8 has been superseded by libssl-1.0.0 in the tc-5.x repo, so extensions like wvdial that depend on it will need recompiling.