lb.dualreg stuff:

lb.dualreg stuff:
- LOGFLAG_*defines  renamed to EDG_WLL_LOGFLAG_* and moved to events.h
- Set proper priority flag on client side (dualregjob event has both EDG_WLL_LOGFLAG_PROXY and EDG_WLL_LOGFLAG_DIRECT)
- on LB proxy, do not send to bkserver the events that has already the flag EDG_WLL_LOGFLAG_DIRECT, i.e. those already sent
- still missing: storing priority flags to DB, requires addition to DB schema