vchoi_fork

[svn-r564] Purpose:
    New feature

Problem:
    Source code must be modified prior to compiling to allow full
    filenames to contain preferred user directories. Source must be
    recompiled everytime the preferred user directory changes.

Solution:
    Instead, allow file prefixes preferred by user to be passed at
    runtime using the arguments "-f <prefix>".  The "-f" to signal the
    next argument is to be a file prefix, and the "<prefix>" to be the
    actual prefix used.

Platform tested:
    ASCI Red