RFR: 8253426: jpackage is unable to generate working EXE for add-launcher …

[Andy Herrick]

8253426: jpackage is unable to generate working EXE for add-launcher configurations.
secondary launchers ignored module, main-jar, and main-class in launcher properties file because  the LAUNCHER_DATA
param was not removed from the set of params for each new add-module. testcase added in AddLauncherTest,java

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Commit messages:
 - 8253426: jpackage is unable to generate working EXE for add-launcher configurations

Changes: https://git.openjdk.java.net/jdk/pull/347/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=347&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8253426
  Stats: 36 lines in 3 files changed: 33 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/347.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/347/head:pull/347

PR: https://git.openjdk.java.net/jdk/pull/347