RFR: 8306688: Support Windows serialized keystores (SST files)

[Mat Carter]

Added ability to load keystores from SST files on Windows.  Example usage:

KeyStore keyStore = KeyStore.getInstance("Windows-SST");
try (FileInputStream fis = new FileInputStream("mykeystore.sst")) {
   keyStore.load(fis, null);
}

Note that its not limited to file streams, it can be any stream.

The feature is behind a runtime flag ("sun.security.mscapi.keyStoreSSTSupport") as the KeyStore must have an input stream, but the JCK tests assume an input stream is optional

tier1 tests for linux/macos/Windows for x86_64

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Commit messages:
 - Removed whitespace
 - Merge branch 'openjdk:master' into macarte/8306688
 - Add support for SST files on Windows

Changes: https://git.openjdk.org/jdk/pull/14187/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14187&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8306688
  Stats: 191 lines in 3 files changed: 145 ins; 40 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/14187.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14187/head:pull/14187

PR: https://git.openjdk.org/jdk/pull/14187