RFR: 8155246: Throw error if default java.security file is missing [v4]

[Sean Coffey]

> In the broken case where the conf/security/java.security configuration file doesn't exist, the JDK should throw an Error. 
> 
> CSR in progress.

Sean Coffey has updated the pull request incrementally with one additional commit since the last revision:

  Update comments

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Changes:
  - all: https://git.openjdk.org/jdk/pull/9747/files
  - new: https://git.openjdk.org/jdk/pull/9747/files/0ae24472..a8cd24d1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=9747&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=9747&range=02-03

  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/9747.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9747/head:pull/9747

PR: https://git.openjdk.org/jdk/pull/9747