RFR: 8262083: vmTestbase/nsk/jvmti/SetEventNotificationMode/setnotif001/TestDescription.java failed with "No notification: event JVMTI_EVENT_FRAME_POP (61)"

[Alex Menkov]

The test requests NotifyFrame event from MethodEntry handler expecting that 1st MethodEntry event is generated for main thread.
The fix adds a check that the thread is correct and skips event from other threads

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Commit messages:
 - JDK-8262083

Changes: https://git.openjdk.java.net/jdk/pull/3060/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3060&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8262083
  Stats: 35 lines in 2 files changed: 15 ins; 11 del; 9 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3060.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3060/head:pull/3060

PR: https://git.openjdk.java.net/jdk/pull/3060