RFR: 8276654: element-list order is non deterministic [v5]

[Andrew Leonard]

> Fixes: https://bugs.openjdk.java.net/browse/JDK-8276654
> 
> A intermittent problem with the make dependencies means the jdk.javadoc element-list-.txt generation can remove the src defined element|package-list-<7,8,9,10>.txt files.
> Recreatable by using --with-jobs=1 causing jdk.javadoc "gendata" to always occur after "java" module build dependency.
> 
> Signed-off-by: Andrew Leonard <anleonar at redhat.com>

Andrew Leonard has updated the pull request incrementally with one additional commit since the last revision:

  8276654: element-list order is non deterministic
  
  Signed-off-by: Andrew Leonard <anleonar at redhat.com>

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/6278/files
  - new: https://git.openjdk.java.net/jdk/pull/6278/files/a7474d01..85056a09

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=6278&range=04
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=6278&range=03-04

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6278.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6278/head:pull/6278

PR: https://git.openjdk.java.net/jdk/pull/6278