Reviewed-by: dfuchs, chegar, vtewari

Summary: updated files with 2011, 2012 and 2013 years according to the file's last updated date
Reviewed-by: tbell, lancea, chegar

Reviewed-by: alexsch, smarks

Reviewed-by: darcy

Reviewed-by: chegar

Reviewed-by: alanb, chegar, hawtin

Reviewed-by: chegar, ksrini

Summary: to use new InternalError constructor with cause chainning
Reviewed-by: alanb, ksrini, xuelei, neugens
Contributed-by: sebastian.sickelmann@gmx.de

Reviewed-by: xdono

Reviewed-by: darcy, weijun

Summary: Fixed a couple of regressions in FtpClient and updated the test.
Reviewed-by: chegar

Summary: Major reorg of internal FTP client code
Reviewed-by: chegar