(Re)introduce the display of the next source line to be executed when stepping through code (just like gdb) when not using --fullname. The current implementation shows the actual assembly without labels even. So in the default mode it feels a little you are debugging without symbols but you are not it is just the display of the inner stack frame is awkward and not gdb style.

Now shows source line and when source file changes it also displays the file info just like the gdb.