Review Request 8152197: Single place to specify module-specific information for images build

[Mandy Chung]

Erik,

This cleans up several makefiles and now have one single file (make/common/Modules.gmk) to specify the module-specific information for the build:

http://cr.openjdk.java.net/~mchung/jdk9/webrevs/8152197/webrev.00/index.html

Mandy