jtreg6
revert TestNG back to 7.3.0 minor updates to README.md and build.sh
See https://blogs.oracle.com/jjg/entry/jtreg_update_february_2012
7901728: jtreg needs to support new "long form" JDK options
Restore SOURCE value in 'release' file
7902791: Update versions of jtreg dependencies
7902199: some of jtreg's tests require update for macOS
Support .src-rev files; minor make cleanup
Update AsmTools to 7.0 b08; update JT Harness to 6.0-b11
Change to use -source 8 -target 8 for the main tool; version to 5.0
7902855: make/build.sh fails when OpenJDK is specified for --jdk option
See https://blogs.oracle.com/jjg/entry/jtreg_update1
7900136: update Ant build
Remove definitions related to JavaHelp
7900245: jtreg build should be cygwin-aware