Added test
Added ErroFile class
Renamed to ErrorLog
Updated copyright date
Replaced usages of System.err with ErrorLog calls
Renamed logToErrorFileEnabled -> continueOnError()
Test tat error messages don't overlap

when multiple threads are on, write one error completely, then the
other
Synchronize log file

so the sql statements don't get intermingled
Just check state, not full query

makes it the same for mysql,csv,sql
Correctly count lines for multiple segments
Improved name/comments in ErrorLog
Removed unused method
Removed retry part of comment

--retry is now added automatically with --commit=auto
Made method static
Removed unused field
Renamed field to match type
merge ScottDugas: Fixed deadlock in loader with multiple threads when there's an error

Merge pull request #91 from ScottDugas/sql-layer-client-tools/loader-deadlock
https://github.com/FoundationDB/sql-layer-client-tools/pull/91