RFR: 8255810: Zero: build fails without JVMTI

[Aleksey Shipilev]

Zero interpreter has two modes: with JVMTI built-in, and without. But we cannot test it properly, because the build fails without JVMTI in shared code. Mostly due to JDK-8147388.

Additional testing:
 - [x] Linux x86_64 Zero fastdebug builds `--with-jvm-features=-jvmti`

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Commit messages:
 - Invert the order of end comments
 - 8255810: Zero: build fails without JVMTI

Changes: https://git.openjdk.java.net/jdk/pull/1036/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1036&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255810
  Stats: 4 lines in 2 files changed: 2 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/1036.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/1036/head:pull/1036

PR: https://git.openjdk.java.net/jdk/pull/1036