`hadoop classpath` behaviour different from previous releases

In 2.6 doing a `hadoop classpath` returns the following

classpath [--glob|--jar <path>|-h|--help] :
Prints the classpath needed to get the Hadoop jar and the required
libraries.
Options:

--glob expand wildcards
--jar <path> write classpath as manifest in jar named <path>
-h, --help print help

This is different from earlier releases.
However, passing any argument to the command will return the classpath as earlier
E.g. `hadoop classpath foo`

It would be nice to preserve the original behaviour for scripts that read the classpath using this command.

The fix seems to be a one line change in
hadoop-common-project/hadoop-common/src/main/bin/hadoop