[foreign-jextract] RFR: 8252047: jextract generates uncompilable code with --source option [v3]

[Athijegannathan Sundararajan]

> Splitting constant helper class into multiple classes.
> Piggybacking to avoid generating "long double" fields, variables, arguments.

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

  refactored isLongDouble as a separate method as suggested in review.

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

Changes:
  - all: https://git.openjdk.java.net/panama-foreign/pull/286/files
  - new: https://git.openjdk.java.net/panama-foreign/pull/286/files/157b1eeb..d938015c

Webrevs:
 - full: https://webrevs.openjdk.java.net/panama-foreign/286/webrev.02
 - incr: https://webrevs.openjdk.java.net/panama-foreign/286/webrev.01-02

  Stats: 11 lines in 1 file changed: 5 ins; 2 del; 4 mod
  Patch: https://git.openjdk.java.net/panama-foreign/pull/286.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-foreign pull/286/head:pull/286

PR: https://git.openjdk.java.net/panama-foreign/pull/286