PM-708 Changed the handling for stdout | stderr | stdin files in the
JAVA DAX API. Corresponding uses files are now only added when we are
printing out the ADAG contents in the toXML method if not already
specified by the user. This also removes the warning messages, where a
user adds a uses section for a stdout file with different transfer and
register flags explicitly in their DAX generators.
PM-708 Added an examples sub package in the dax package.
PM-708 updated the java DAX api diamond example.