RFR: 8342914: Remove calls to doPrivileged in swt

[Andy Goryachev]

Removes doPrivileged in the following module:

- javafx.swt

See JDK-8342441 for details.

As a helpful hint for reviewers, I recommend reviewing this using the "Hide whitespace" option.

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Commit messages:
 - Merge remote-tracking branch 'origin/master' into 8342914.do.privileged.swt
 - 8342914: Remove calls to doPrivileged in swt

Changes: https://git.openjdk.org/jfx/pull/1611/files
  Webrev: https://webrevs.openjdk.org/?repo=jfx&pr=1611&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8342914
  Stats: 63 lines in 2 files changed: 4 ins; 30 del; 29 mod
  Patch: https://git.openjdk.org/jfx/pull/1611.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1611/head:pull/1611

PR: https://git.openjdk.org/jfx/pull/1611