samba: fix config symbols

Some of the configure cache symbols changed name because some routines
were moved to libreplace instead of samba itself.
So change the naming for those affected so that samba can work nicely
again with some configuration directives (like interfaces = X).

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>