8230407: SocketPermission and FilePermission action list allows leading comma Reviewed-by: chegar Contributed-by: Ivan Gerasimov <ivan.gerasimov@oracle.com>, Chris Hegarty <chris.hegarty@oracle.com>

/build/
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nbproject/private/
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test/nashorn/script/external
test/nashorn/lib
NashornProfile.txt
**/JTreport/**
**/JTwork/**