HH-62 Append WU to log file for easier debug
Also, append WU to temp pipe or file during stream out operations.

Signed-off-by: Rodrigo Pastrana <Rodrigo.Pastrana@lexisnexis.com>
Merge pull request #46 from rpastrana/HH-62-WUID-logname

HH-62 Append WU to log file for easier debug -- first change post 1.0 release