hg: jdk/sandbox: 8203014: jcmd should output command list if no command is given

[chris.hegarty at oracle.com]

Changeset: 16be361f4320
Author:    stuefe
Date:      2018-05-29 20:57 +0200
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/16be361f4320

8203014: jcmd should output command list if no command is given
Reviewed-by: sspitsyn, simonis

! src/jdk.jcmd/share/classes/sun/tools/jcmd/Arguments.java