RFR: 8325373: Improve StackCounter error reporting for bad switch cases [v2]

[Adam Sotona]

> ClassFile API `StackMapGenerator` attaches print or hex dump of the method to an error message.
> However there is no such attachment when the stack maps generation is  turned off.
> 
> This patch moves class print/dump to `impl.Util::dumpMethod`, so it is shared by `StackMapGenerator` and `StackCounter` to provide the same level of details in case of an error.
> 
> Please review.
> 
> Thank you,
> Adam

Adam Sotona has updated the pull request incrementally with one additional commit since the last revision:

  applied suggested changes

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/18914/files
  - new: https://git.openjdk.org/jdk/pull/18914/files/f59654be..1824d1fa

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=18914&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=18914&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/18914.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18914/head:pull/18914

PR: https://git.openjdk.org/jdk/pull/18914