RFR: JDK-8263468: New page for "recent" new API [v4]

[Hannes Wallnöfer]

> This adds a new kind of summary list for new API added in specific releases, and adds information to the deprecated API list about elements that were deprecated in the given releases.
> 
> The changes to the code are relatively minor thanks to the existing infrastructure for summary list pages, which was extended by adding the `getTableCaption` and `addTableTabs` methods to `SummaryListWriter.java` in order to generate tabbed tables. 
> 
> One important area that needs to be reviewed is the addition of resources in `standard.properties`. A relatively big share of discussion and effort went into shaping the UI messages.
> 
> The build system change adds options to generate API changes for all releases after JDK 11, with "New API since JDK 11" as page title for the new API page. I uploaded the generated documentation here:
> 
> http://cr.openjdk.java.net/~hannesw/8263468/api-pr.00/new-list.html
> http://cr.openjdk.java.net/~hannesw/8263468/api-pr.00/deprecated-list.html

Hannes Wallnöfer has updated the pull request incrementally with one additional commit since the last revision:

  JDK-8263468: review comments

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4209/files
  - new: https://git.openjdk.java.net/jdk/pull/4209/files/3b13ae32..c9c5f832

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4209&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4209&range=02-03

  Stats: 29 lines in 7 files changed: 6 ins; 2 del; 21 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4209.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4209/head:pull/4209

PR: https://git.openjdk.java.net/jdk/pull/4209