RFR: 8304446: javap --system flag doesn't override system APIs [v2]

[Adam Sotona]

> Javap ignores --system option when searching for JDK classes.
> This patch prepends search over JDK system modules.
> 
> Please review.
> 
> Thanks,
> Adam

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

  Skip search over JDK modules for classes in unnamed package (mainly to skip JDK module-infos)

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/16476/files
  - new: https://git.openjdk.org/jdk/pull/16476/files/3734262a..78dc9840

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=16476&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=16476&range=00-01

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/16476.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/16476/head:pull/16476

PR: https://git.openjdk.org/jdk/pull/16476