[foreign-jextract] RFR: 8282235: jextract crashes when a Java keyword is used in as a function pointer typedef parameter name

[Athijegannathan Sundararajan]

Missed transforming function typedef parameter names as java safe identifiers.

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

Commit messages:
 - 8282235: jextract crashes when a Java keyword is used in as a function pointer typedef parameter name

Changes: https://git.openjdk.java.net/panama-foreign/pull/653/files
 Webrev: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=653&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8282235
  Stats: 51 lines in 3 files changed: 46 ins; 2 del; 3 mod
  Patch: https://git.openjdk.java.net/panama-foreign/pull/653.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-foreign pull/653/head:pull/653

PR: https://git.openjdk.java.net/panama-foreign/pull/653