[foreign-memaccess+abi] RFR: 8263459: Add better support for restricted methods [v6]

[Athijegannathan Sundararajan]

> --enable-native-access command line option

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

  missed RestrictedNative->NativeAccess in couple of places.

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Changes:
  - all: https://git.openjdk.java.net/panama-foreign/pull/471/files
  - new: https://git.openjdk.java.net/panama-foreign/pull/471/files/768291c7..06bf1a6b

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=471&range=05
 - incr: https://webrevs.openjdk.java.net/?repo=panama-foreign&pr=471&range=04-05

  Stats: 3 lines in 1 file changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/panama-foreign/pull/471.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-foreign pull/471/head:pull/471

PR: https://git.openjdk.java.net/panama-foreign/pull/471