RFR: 8345319: Fix the tag type in PoolEntry and AnnotationValue [v2]

[Chen Liang]

> Change the return type of PoolEntry and AnnotationValue tags to int, as in TypeAnnotation TargetType and StackMapFrameInfo frameType.  The main impact is that AnnotationValue tags should be converted to char before printing now.
> 
> Please review the associated CSR for this hotfix as well.
> 
> Testing: classfile and javap, tier 1-3 in progress
> 
> Pinging @lukellmann

Chen Liang has updated the pull request incrementally with one additional commit since the last revision:

  Fix AnnotationDefaultTest

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Changes:
  - all: https://git.openjdk.org/jdk/pull/22489/files
  - new: https://git.openjdk.org/jdk/pull/22489/files/a025dee6..5d59acd5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22489&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22489&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/22489.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22489/head:pull/22489

PR: https://git.openjdk.org/jdk/pull/22489