Review request for JDK-8039181: Persistent code store does not use absolute paths internally

[Hannes Wallnoefer]

Please review JDK-8039181: Persistent code store does not use absolute 
paths internally:

http://cr.openjdk.java.net/~hannesw/8039181/
The updated webrev makes sure File.getAbsoluteFile() is called in 
doPrivileged section.

Thanks,
Hannes