RFR: 8318388: Update libxslt to 1.1.39 [v2]

[Hima Bindu Meda]

> Updated libxslt to v1.1.39. Verified build on all platforms.No issue seen.

Hima Bindu Meda has updated the pull request incrementally with two additional commits since the last revision:

 - update license for libxslt
 - update libxslt.md

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Changes:
  - all: https://git.openjdk.org/jfx/pull/1298/files
  - new: https://git.openjdk.org/jfx/pull/1298/files/910c1dfb..c078b956

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jfx&pr=1298&range=01
 - incr: https://webrevs.openjdk.org/?repo=jfx&pr=1298&range=00-01

  Stats: 90 lines in 1 file changed: 90 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jfx/pull/1298.diff
  Fetch: git fetch https://git.openjdk.org/jfx.git pull/1298/head:pull/1298

PR: https://git.openjdk.org/jfx/pull/1298