review (S) for 7034513: enable fast accessors and empty methods for ZERO and -Xint

[Tom Rodriguez]

http://cr.openjdk.java.net/~never/7034513

7034513: enable fast accessors and empty methods for ZERO and -Xint
Reviewed-by:

The fix for 6385687 unconditionally turned off
UseFastEmptyMethods/UseFastAccessorMethods but they should be on for
ZERO and -Xint mode.  It was easier to revert the defaults to on and
turn them off for when the compiler is being used.