Very minimal last corrections:
1) busybox.c: fix warining
2) docs/: add applets for list from pwd_grp
3) usage.h: add -n option for route
4) run_parts.c: many todo fix for busybox style
5) addgroup.c: add #ifdef CONFIG_FEATURE_SHADOWPASSWDS, reduce one
perror_msg
6) adduser.c: fix bug "variable i not initialize" and
add #ifdef CONFIG_FEATURE_SHADOWPASSWDS