RFR: dcubed - misc cleanups of jvm.cpp and JVM/TI files.

[Daniel D.Daugherty]

Misc cleanups of jvm.cpp and JVM/TI files.

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Commit messages:
 - dcubed - misc cleanups of jvm.cpp and JVM/TI files.

Changes: https://git.openjdk.java.net/loom/pull/140/files
 Webrev: https://webrevs.openjdk.java.net/?repo=loom&pr=140&range=00
  Stats: 443 lines in 20 files changed: 110 ins; 130 del; 203 mod
  Patch: https://git.openjdk.java.net/loom/pull/140.diff
  Fetch: git fetch https://git.openjdk.java.net/loom pull/140/head:pull/140

PR: https://git.openjdk.java.net/loom/pull/140