Task/435 loglib lmi et al

### Description
Pretty much everything for the log migration.
  o LM_I for start/stop transaction.
  o IP and port in start/stop messages.
  o N/A instead of 'unset'.
  o Long names for levels
  o renamed the logfile from Log to .log
  o time zone in log line
  o 2 hour bug fixed
  o milliseconds inside TIME - one record less in the log line

What's still missing is the alarms, LM_W and LM_E:s with 'special' strings in the msg part.

We should look also to User Manual and Installation Manual at wiki, to fix occurences of contextBrokerLog (I think there shouldn't be too many but we need to do it anyway).