RFR: 8269342: CICrashAt=1 does not always catch first Java method [v2]

[Dean Long]

> This change reintroduces the CICountNative flag, so that -XX:+CICountNative -XX:CICrashAt=1 can reliably crash the first compiled Java method without worrying about native method wrappers and method handle intrinsics.

Dean Long has updated the pull request incrementally with one additional commit since the last revision:

  added comment

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/4897/files
  - new: https://git.openjdk.java.net/jdk/pull/4897/files/ba0569e2..b422c8fd

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=4897&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=4897&range=00-01

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4897.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4897/head:pull/4897

PR: https://git.openjdk.java.net/jdk/pull/4897