RFR: 8169993: Class::desiredAssertionStatus should call getClassLoader0

[Claes Redestad]

Hi,

having classes ask the security manager for permission to access its own 
class loader
when probing for assertion status during class initialization appears 
pointless.

Bug: https://bugs.openjdk.java.net/browse/JDK-8169993
Webrev: http://cr.openjdk.java.net/~redestad/8169993/webrev.01/

Thanks!

/Claes