[Samba] wbinfo --ping can't find winbind?

[Jorell]

After compiling, libnss_winbind.so needs to be copied to 
/lib/libnss_winbind.so and linked to /lib/libnss_winbind.so.2
(i.e. cp ../nsswitch/libnss_winbind.so /lib/ && \
ln -s /lib/libnss_winbind.so /lib/libnss_winbind.so.2)

You may have to copy other library files as well