Add support for --about-url, --win-update-url and --win-help-url parameters
------------- Commit messages: - Remove unused import-s - 8220266: add support for additional metadata in add/remove programs Changes: https://git.openjdk.java.net/jdk/pull/3178/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3178&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8220266 Stats: 573 lines in 9 files changed: 563 ins; 0 del; 10 mod Patch: https://git.openjdk.java.net/jdk/pull/3178.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/3178/head:pull/3178 PR: https://git.openjdk.java.net/jdk/pull/3178