[foreign-jextract] RFR: 8262117: jextract crashes with javac compilation error "class u is already defined" [v2]

[Athijegannathan Sundararajan]

> enclosing names are checked for clash now

Athijegannathan Sundararajan has updated the pull request incrementally with one additional commit since the last revision:

  change suggested during code review.

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

Changes:
  - all: https://git.openjdk.java.net/panama-foreign/pull/458/files
  - new: https://git.openjdk.java.net/panama-foreign/pull/458/files/bea8e2d4..7692b7c2

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=458&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=458&range=00-01

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/panama-foreign/pull/458.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-foreign pull/458/head:pull/458

PR: https://git.openjdk.java.net/panama-foreign/pull/458