8157061: Add support for running jtreg tests from IntelliJ project
Summary: Add basic capabilities for running jtreg tests from the IDE using a custom ant target
Reviewed-by: chegar

8074716: IntelliJ IDEA project support
Reviewed-by: rriggs
Contributed-by: Chris Hegarty <chris.hegarty@oracle.com>, Maurizio Cimadamore <maurizio.cimadamore@oracle.com>