[foreign-jextract] RFR: 8262733: jextract generates clashing names which results in compilation error with javac [v2]

[Athijegannathan Sundararajan]

> name clash is avoided by checking surrounding class names

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

  incorporating changes suggested in review.

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Changes:
  - all: https://git.openjdk.java.net/panama-foreign/pull/462/files
  - new: https://git.openjdk.java.net/panama-foreign/pull/462/files/67fe8fe7..6e6fe4c9

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=462&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=462&range=00-01

  Stats: 10 lines in 1 file changed: 4 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/panama-foreign/pull/462.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-foreign pull/462/head:pull/462

PR: https://git.openjdk.java.net/panama-foreign/pull/462