RFR: 8275375: [REDO] JDK-8271949 dumppath in -XX:FlightRecorderOptions does not affect

[Yasumasa Suenaga]

This PR is for redo-ing [JDK-8271949](https://bugs.openjdk.java.net/browse/JDK-8271949).
I changed to use `SecuritySupport` at `Options::setDumpPath` as @egahlin mentioned. Please see change both Options.java and SecuritySupport.java .

I've tested this change with all jdk/jfr tests on Linux x64, and they works fine.
@egahlin @mgronlun Can you run Mach5 tests with this change?

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Commit messages:
 - 8275375: [REDO] JDK-8271949 dumppath in -XX:FlightRecorderOptions does not affect

Changes: https://git.openjdk.java.net/jdk/pull/6000/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6000&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8275375
  Stats: 173 lines in 10 files changed: 139 ins; 3 del; 31 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6000.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6000/head:pull/6000

PR: https://git.openjdk.java.net/jdk/pull/6000