RFR: 4792: Stop using System.out/err.println and e.printStackTrace [v4]

[Jean-Philippe Bempel]

> replaced by java.util.logging logging

Jean-Philippe Bempel has updated the pull request incrementally with one additional commit since the last revision:

  spotless

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

Changes:
  - all: https://git.openjdk.java.net/jmc/pull/272/files
  - new: https://git.openjdk.java.net/jmc/pull/272/files/d948fa39..980aa8fa

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jmc&pr=272&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jmc&pr=272&range=02-03

  Stats: 6 lines in 1 file changed: 4 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jmc/pull/272.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/272/head:pull/272

PR: https://git.openjdk.java.net/jmc/pull/272