msDS-isRODC implementation

[Anatoliy Atanasov]

>> And where are construct_msds_isrodc_with_* are defined? git grep can't
> >> find them.
> > They are in dsdb/samdb/ldb_modules/util.c
> 
> ah, ok.
> 
> But why? I think they should be static and all in the same place.
My idea is not to have utility functions in operational.c but rather move them to util.c, but they are not utiliy functions either, so I can move them back :)