RFR: 8274346: Support for additional content in an app-image. [v2]

[Andy Herrick]

> 8274346: Support for additional content in an app-image.

Andy Herrick has updated the pull request incrementally with one additional commit since the last revision:

  JDK-8274346: Support for additional content in an app-image.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5780/files
  - new: https://git.openjdk.java.net/jdk/pull/5780/files/d53b8647..bf2dd5e8

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5780&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5780&range=00-01

  Stats: 2 lines in 1 file changed: 0 ins; 1 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5780.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5780/head:pull/5780

PR: https://git.openjdk.java.net/jdk/pull/5780