RFR: 7903819: jcstress do not print structuralised results

[Jiří Vaněk]

Jcstress are generating very good html report, which is however not exactly great for automated comapriosns over various systyems and architectures. This pr is adding junit-like, configurable report.

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Commit messages:
 - Dropped the dom-based generation
 - Started migration to proepr DOM
 - Revert "FIXME Added fast fake results generator REMOVE IT"
 - Fixed few noted comments/variables
 - made default output xsd valid again
 - changed comments proeprty to comment out non-standart elements
 - Unifide testcase print
 - Support for time attribute  and removed some dnagling code
 - <testsuite> now prints correct summary
 - Not printing the seed argument
 - ... and 15 more: https://git.openjdk.org/jcstress/compare/95384bab...910b6ba5

Changes: https://git.openjdk.org/jcstress/pull/158/files
  Webrev: https://webrevs.openjdk.org/?repo=jcstress&pr=158&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7903819
  Stats: 757 lines in 6 files changed: 735 ins; 4 del; 18 mod
  Patch: https://git.openjdk.org/jcstress/pull/158.diff
  Fetch: git fetch https://git.openjdk.org/jcstress.git pull/158/head:pull/158

PR: https://git.openjdk.org/jcstress/pull/158