Review request: JDK-8006753 fix failed for JDK-8002415 White box testing API for HotSpot

[Mikael Gerdin]

Hi,

Background:
Even from the beginning of the WhiteBox testing API implementation the 
tests have not worked on builds promoted by release engineering due to 
the fact that the wb.jar file containing the Java classes was not 
imported by the JDK-level makefiles.
On one level this was ok since we didn't want to ship the classes to end 
users and we worked around the complexity of somehow post-processing the 
RE bundles to remove them.

The problem is that we aren't able to run the WhiteBox tests in 
promotion testing, or to verify fixes against earlier builds.

Solution:
The solution suggested here is to put the WhiteBox helper classes in the 
testlibrary directory under test/ and
* tell jtreg to first compile the classes
* run a special Java program to copy the classes to the test work directory
* run the white box test with -Xbootclasspath/a:. to pick up the copied 
classes.

The solution is kind-of hackish but I've been unable to come up with a 
better solution without performing complex surgery on jtreg.

The changes to the make/ directory should basically revert the makefile 
changes that were added to support this API.

Webrev:
http://cr.openjdk.java.net/~mgerdin/8006753/webrev.0/
Bug:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8006753

Note about renamed/moved files:
I will try to make sure that the moved/renamed files will be tracked 
properly by mercurial, but I think that using patch files and MQ breaks 
this so I'll do this after the review is done.

Thanks
/Mikael