[JDK-8295974](https://bugs.openjdk.org/browse/JDK-8295974) modified print_jni_stack to print the native stack when there are no Java frames. To do that it used VMError::print_native_stack, however that function is only for platforms that support stack-walking by following frames, on other platforms (i.e. Windows and AIX) we need to use os::platform_print_native_stack.
I'm not trying to consolidate the different versions of the stack printing code in this PR so that it is more easily backported to where [JDK-8295974](https://bugs.openjdk.org/browse/JDK-8295974) was. The test has been updated to work on Windows (taking advantage of two other recent enhancements - see JBS for details). Testing: - tiers 1-3 (sanity) - TestNativeStack regression test Thanks ------------- Commit messages: - Only save symbols on Windows - other platforms don't need it - Merge branch 'master' into 8311541-print-jni-stack - interim Changes: https://git.openjdk.org/jdk/pull/14862/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14862&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8311541 Stats: 51 lines in 5 files changed: 43 ins; 1 del; 7 mod Patch: https://git.openjdk.org/jdk/pull/14862.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/14862/head:pull/14862 PR: https://git.openjdk.org/jdk/pull/14862
