RFR: 8262300: jpackage app-launcher fails on linux when using JDK11 based runtime

[Alexey Semenyuk]

Fix jpackage app launcher to also look for JLI lib in "lib/jli/libjli.so" subdirectory of runtime

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Commit messages:
 - 8262300: jpackage app-launcher fails on linux when using JDK11 based runtime

Changes: https://git.openjdk.java.net/jdk/pull/2827/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2827&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8262300
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2827.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2827/head:pull/2827

PR: https://git.openjdk.java.net/jdk/pull/2827