RFR: 8234056: Upgrade to libxslt 1.1.34

[Arun Joseph]

We need to update the version of libxslt to the latest version, 1.1.34.

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Commits:
 - 2d9c0bf3: 8234056: Upgrade to libxslt 1.1.34

Changes: https://git.openjdk.java.net/jfx/pull/45/files
 Webrev: https://webrevs.openjdk.java.net/jfx/45/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8234056
  Stats: 868 lines in 34 files changed: 419 ins; 263 del; 186 mod
  Patch: https://git.openjdk.java.net/jfx/pull/45.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/45/head:pull/45

PR: https://git.openjdk.java.net/jfx/pull/45