6695506: JVM should accept classfiles with classfile version 51
Summary: increase class file parser's acceptable max to 51
Reviewed-by: sbohne, ikrylov
6689523: max heap calculation for compressed oops is off by MaxPermSize
Summary: Need to subtract MaxPermSize from the total heap size when determining whether compressed oops is turned on.
Reviewed-by: jmasa, jcoomes, kvn