RFR: 8250950: Allow per-user and system wide configuration of a jpackaged app

[Alexey Semenyuk]

8250950: Allow per-user and system wide configuration of a jpackaged app

-------------

Commit messages:
 - Trailing white space removed
 - EOLs converted
 - Trailing white space removed
 - 8250950: Allow per-user and system wide configuration of a jpackaged app

Changes: https://git.openjdk.java.net/jdk/pull/9025/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=9025&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8250950
  Stats: 568 lines in 14 files changed: 512 ins; 36 del; 20 mod
  Patch: https://git.openjdk.java.net/jdk/pull/9025.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/9025/head:pull/9025

PR: https://git.openjdk.java.net/jdk/pull/9025