RFR: 8236127: Use value of --icon CLI option to set icon for exe installers [v2]

[Alexey Semenyuk]

> Use value of `--icon` jpackage CLI option to set icon for exe installers.

Alexey Semenyuk has updated the pull request incrementally with one additional commit since the last revision:

  Make --icon option applicable in installer mode

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/3347/files
  - new: https://git.openjdk.java.net/jdk/pull/3347/files/e88a1816..36ec66de

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=3347&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=3347&range=00-01

  Stats: 36 lines in 5 files changed: 21 ins; 11 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3347.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3347/head:pull/3347

PR: https://git.openjdk.java.net/jdk/pull/3347