RFR: 7439: Introduced IConstantPoolExtension for Constant Pools [v2]

[Jean-Philippe Bempel]

> Add extension methods when constants are read, referenced, resolved
> and constant pools fully resolved to be able for example:
> 
>  * track constant pool usage inside events
>  * replace or translate symbols, method names, etc... like
> de-obfuscations of stack traces

Jean-Philippe Bempel has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  7439: Introduced IConstantPoolExtension for Constant Pools
  
  Add extension methods when constants are read, referenced, resolved
  and constant pools fully resolved to be able for example:
  
   * track constant pool usage inside events
   * replace or translate symbols, method names, etc... like
  de-obfuscations of stack traces

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

Changes:
  - all: https://git.openjdk.java.net/jmc/pull/333/files
  - new: https://git.openjdk.java.net/jmc/pull/333/files/1ef4e5bd..d2d44de4

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jmc&pr=333&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jmc&pr=333&range=00-01

  Stats: 194 lines in 4 files changed: 125 ins; 54 del; 15 mod
  Patch: https://git.openjdk.java.net/jmc/pull/333.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/333/head:pull/333

PR: https://git.openjdk.java.net/jmc/pull/333