[Samba] Is the location of the "winbindd_privileged" directory hard-coded?

[Miguel Medalha]

"man winbindd" states that the winbindd privileged pipe should be in 
"$LOCKDIR/winbindd_privileged/pipe" which is also not correct.

A FHS installation places the "winbindd_privileged" directory in the 
expected place "/var/lib/samba/winbindd_privileged".

The /usr/local installation does not respect its own default:

--with-privileged-socket-dir=PRIVILEGED_SOCKET_DIR
      privileged socket directory
      [STD-Default: ${LOCALSTATEDIR}/lib]
      [FHS-Default: ${LOCALSTATEDIR}/lib/samba]