Merge issue: Profile attribute need to be examined before custom attributes

The implementation of Compact Profiles (JEP-161) are being staged in a side-forest in preparation for PIT and push into jdk8 for M7.

When the changes were merged with the changes for JDK-8004547 then the check for the Profile attribute ended up after the check for the FX marker class. This was only noticed after the change-sets were created and so can't be undone.

This bug is submitted to fix this merge issue in the profile staging forest before it is pushed to master.