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

[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**

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

Commit messages:
 - 8321428: Deprecate for removal the package java.beans.beancontext

Changes: https://git.openjdk.org/jdk/pull/18569/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18569&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8321428
  Stats: 47 lines in 19 files changed: 44 ins; 0 del; 3 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