vchoi_fork

[svn-r5024] Purpose:
    Feature
Description:
    The output of multiple tests of one host used to all go to the same
    logfile.  It is harder to find the beginning of each test.
Solution:
    Added hour and minute (HHMM) into the logfile name.  Different
    tests should go to different files now.  If a second test starts
    within a minute of the previous test, their output will be all
    in the same file.  In the case, there are probably not that much
    output to worry.
Platforms tested:
    eirene