RFE/RFC reproducible policies

[Jiri Vanek]

Hello again!

webrev https://jvanek.fedorapeople.org/oracle/jdk9/webrevs/reproduciblePolicies/v1/

Recent Feature Complete milestone have scared me, as I have long-time persisting issue when 
packaging openjdk (6..7...8 and 9)

The policy jars, always from same source, never the same. As they are considered as configure files, 
the RPM update treat them alike.

Not so do jdk build system, and every build have its "special" but still the same. .policies.

This is fixed in my RPMS since [1] like [2]

Well, not nice. I checked icedtea, and they since [3] already have this change [4]

So I looked into JDK9 and.. it ahave teh change in  CreateSecurityJars.gmk ! Not whole, but 
definitely not used. I really do not understand why.

So there is patch for jdk9's - 
https://jvanek.fedorapeople.org/oracle/jdk9/webrevs/reproduciblePolicies/v1/  which is making the 
policies truly static even with all this necessary stamping.

However, I must apologise for missing part, which I had not found how to solve.
Up to "make" (build) everything is ok. but "make images" corrupts the timestamps,  I did not found, 
where the built files flow to images:(to stamp them again, and last time)

Best regards from CZ
   J.


[1] 
http://pkgs.fedoraproject.org/cgit/rpms/java-1.8.0-openjdk.git/commit/?h=f21&id=ae70e5d64fbe2fb042c0cee088316b39ee8bf8c9
[2]http://pkgs.fedoraproject.org/cgit/rpms/java-1.8.0-openjdk.git/tree/repackReproduciblePolycies

[3]
http://icedtea.classpath.org/hg/icedtea8-forest/jdk/rev/afd392dfaed5
http://icedtea.classpath.org/hg/icedtea8-forest/jdk/rev/edf1cacfe015
http://icedtea.classpath.org/hg/icedtea8-forest/jdk/rev/9b6cfe5f5078

[4]
http://icedtea.classpath.org/hg/icedtea8-forest/jdk/file/tip/make/CreateSecurityJars.gmk