- Backend-solve uid/gid selection, quota set, extra groups adding

- common.pm:701 - chown needs to be shell command so that it can sudo

What happens if equal_ids is yes, you create new user, and no gid in 
first/last gid range is available so it defaults to gid == uid, and 
that gid is taken by something else

privremeno brekjat exit kodove dok se dief izvrsava, pogledat
kako u njega dodat kod da primi.

razlikovat die od greske i kad nema posla

work on the idea that check is primary. then based on action and check
result, either do nothing, execute "add" action, or execute "delete" action.

add sighandler

ono --system neka bude alias za --class service. A klasovi ce se mapirat
na kerb i afs imena.

see how to make each module accept module-specific args

Replace %c with {varname}, so user can setup anything

fill in ldap / krb /afs info from debconf

in adduser manpage, document all names for options

nakon sta cu unificirat une replacemente {varname} i %c, 
 dodat da se mogu izvrsavat eval operacije.. recimo,
 kerberos_components_admin = s/(_admin)?$/\/admin/

according to beginning of DHOME, figure out what type is the directory.
rules like DTYPE_/home/ = local, DTYPE_/afs/ = afs

da pita password kad kreiras grupu.. po defaultu ask_passwd za to nek je
0, al da ga mos ukljucit.

support for custom gecos info

run local script from a common place.

eventually split check/execute into check/setup/execute.. so that check()
really has no purpose but making sure that the run will be smooth. In 
that case, we can turn off checks for mass useradds where we know we're
starting with good parms and want to speed up the process..

switch to allow command-line setting of what backends to run.


dal se -w PASS vidi u ps outputu?

pisanje u module-specific namespace se nemoze overridat komandlajn
opcijom


eventualno opcija da uvijek ide u increment ID-a.. ako pobrises 
nekog usera da ne reusa njegov id

proc po svim dief-ima i slicnima i vidit jel imaju exit status definiran

gecos nije snimljen u pass file

check that all config opts are present in cfg file as examples

addgroup da podrzi sve opcije (sifra itd.) sta ima u /etc/group formatu

handler da provjeri dal _check i _exec funckcije koje cemo mi 
zvat postoje unutar tog modula, i da exita ako ne postoje. (ako neko
registrira modul da handla nesto sta nemoze, recimo afs da handla grupe).