Default value for QPID_WORK in qpid-server.bat

[Suran Jayathilaka]

Hi all,

I'm working on updating the qpid-server.bat file to reflect the features 
found on the qpid-server/qpid-run bash scripts.  
(https://issues.apache.org/jira/browse/QPID-168)

When starting the broker, QPID_WORK should be set to the HOME 
environment variable if the user doesn't explicitly specify a value for 
it. This works fine in Linux, but in Windows, what should be the value 
set for it in  the common case that %HOME% has not been set?

Thanks.
Suran.