RFR: Merge openjdk/panama-foreign:foreign-memaccess

[Jorn Vernee]

Resolves: https://github.com/openjdk/panama-foreign/pull/11

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Commits:
 - 9ff90608: Merge of foreign-memaccess into foreign-abi
 - 2a345730: 8238320: What is the alignment of padding layouts?

Changes: https://git.openjdk.java.net/panama-foreign/pull/14/files
 Webrev: https://webrevs.openjdk.java.net/panama-foreign/14/webrev.00
  Stats: 51 lines in 3 files changed: 40 ins; 9 del; 2 mod
  Patch: https://git.openjdk.java.net/panama-foreign/pull/14.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-foreign pull/14/head:pull/14

PR: https://git.openjdk.java.net/panama-foreign/pull/14