RFR: JDK-8157574: Mac fastdebug bundles have wrong directory layout

[Erik Joelsson]

Hello,

In JDK-8136777 I introduced the new bundle targets which creates .tar.gz 
bundles of all the images. The naming and layout of these bundles were 
based on how Oracle has created such bundles internally before. Except 
in one case, where I missed: Macosx debug.

As I see it, there is no real right or wrong here, just opinion and 
history. On Macosx, for release builds, the image layout is a bit 
different compared to other platforms:

jdk-9.jdk/Contents/Home/

compared to:

jdk-9/

On all other platforms, the debug bundles look like this:

jdk-9/$(DEBUG_LEVEL)/

Which makes it possible to overlay both release and debug bundles in the 
same directory.

Now the question is what the layout in a debug bundle for macosx should 
look like. JDK-8136777 resulted in the same as for macosx release:

jdk-9.jdk/Contents/Home/

While Oracle historically used the same as other platforms:

jdk-9/$(DEBUG_LEVEL)/

This change aligns with Oracle's old way so as to reduce friction and 
adoption internally.

Bug: https://bugs.openjdk.java.net/browse/JDK-8157574
Webrev: http://cr.openjdk.java.net/~erikj/8157574/webrev.top.01/

/Erik