[7u6] Please review my fix for 7172430: [macosx] debug message in non debug jdk build

[Alexander Zuev]

Hello,

   please review my fix for CR 7172430: [macosx] debug message in non 
debug jdk build
   CR description can be found here: 
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7172430

   Webrev with the proposed change can be seen here: 
http://cr.openjdk.java.net/~kizune/7172430/webrev.00

   For consistency i have created the jdk8 sub-cr and need a separate 
review so change will be in jdk8 before i ask for approval to push to 
7u6. Sorry for causing deja vu...

With best regards,
Alex