[jdk11u-dev] RFR: 8255718: Zero: VM should know it runs in interpreter-only mode

[Aleksey Shipilev]

Clean backport. 

Additional testing:
 - [x] Linux x86_64 Zero, `-XX:+TieredCompilation`, used to fail, now passes

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Commit messages:
 - Backport f0eeca90804ca2b90c15290f8df07c95dd468363

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/93/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=93&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255718
  Stats: 5 lines in 1 file changed: 5 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/93.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/93/head:pull/93

PR: https://git.openjdk.java.net/jdk11u-dev/pull/93