debugger: Modified call chain for calls to runtime injected main methods.

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
debugger: Added dynamic evaluation of a Nit module.

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>
debugger: Modified commands for the debugger.

Signed-off-by: Lucas Bajolet <r4pass@hotmail.com>