This is preparation for PPC64 integration: http://openjdk.java.net/jeps/175
This and following ppc64 changes will go into staging repository first and tested there: http://hg.openjdk.java.net/ppc-aix-port/stage/
With this change and "8024854: Basic changes and files to build the class library on AIX" it will be possible to configure and completely build the staging repository on AIX 5.3 and 7.1 with the following command:
configure --with-boot-jdk=<jdk-image> --with-jvm-variants=core --with-jvm-interpreter=cpp --with-cups-include=/opt/freeware/include --x-includes=/opt/freeware/include