Log configuration changes

[Leif Hedstrom <zw...@apache.org>]

Hi all,

in order to eliminate some confusion, I have renamed all log 
configurations and stats from "log2" to simply "log". The name log2 was 
a legacy thing to deal with backwards compatibility of a commercial 
product, a legacy that Apache TS does not have to deal with. This name 
change is intended to clarify that there is in fact only one log system, 
"log".

For all users, it's important you modify your records.config 
accordingly, if you run builds from trunk. v2.1.5 will also ship with 
this change. As an "upgrade path", all you have to do is to do a replace 
of all occurrences of log2 in records.config to log ( e.g. sed 
's/log2/log/g').

Cheers,

-- leif