RFR: 8232864: Classes generated by GenerateJLIClassesPlugin.java are not reproducable

[Jie Fu]

Hi all,

JBS:    https://bugs.openjdk.java.net/browse/JDK-8232864
Webrev: http://cr.openjdk.java.net/~jiefu/8232864/webrev.00/

To find out how to reproduce this bug, please refer to the JBS.

To keep things sorted in a deterministic order, current implementation 
seems to be dependent on a default trace file [1] 
(default_jli_trace.txt, which is generated during building the jdk image 
[2]).
However, not all images will generate such a trace file.
For example, when cds is disabled, default_jli_trace.txt won't be 
generated at all.
If the trace file doesn't exist, classes generated by 
GenerateJLIClassesPlugin.java will not be sorted in a deterministic order.

Testing:
  - make test TEST="tier1 tier2 tier3" CONF=server-release

Could you please review it and give me some advice?

Thanks a lot.
Best regards,
Jie

[1] 
http://hg.openjdk.java.net/jdk/jdk/file/70e6b0d8db13/src/jdk.jlink/share/classes/jdk/tools/jlink/internal/plugins/GenerateJLIClassesPlugin.java#l58
[2] 
http://hg.openjdk.java.net/jdk/jdk/file/70e6b0d8db13/make/GenerateLinkOptData.gmk#l54