RFR: 8321428: Deprecate for removal the package java.beans.beancontext [v5]

[Larry Cable]

> the beancontext package was added (by me) in JDK 1.2 to provide JavaBeans(tm) with a containment and services hierarchy.
> 
> based upon concepts from OpenDoc, which was a popular component model at the time, the API pre-dated the addition of language features such as annotations, and the invention and adoption of programming design patterns such as "Inversion of Control"  and/or "Dependency Injection".
> 
> This API (package) has not evolved with either the language or current design trends, as such it is, at best, anachronistic, and is probably an anti-pattern that should be avoided.
> 
> This package is therefore deprecated **FOR REMOVAL IN AT FUTURE RELEASE**

Larry Cable has updated the pull request incrementally with one additional commit since the last revision:

  removed trailing whitespace reported  by jcheck

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18569/files
  - new: https://git.openjdk.org/jdk/pull/18569/files/86680a2c..255b17d0

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18569&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18569&range=03-04

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/18569.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18569/head:pull/18569

PR: https://git.openjdk.org/jdk/pull/18569