RFR: JDK-8193369: post_field_access does not work for some functions, possibly related to fast_getfield

[Alex Menkov]

Hi all,

Please review a fix for
JDK-8193369: post_field_access does not work for some functions, 
possibly related to fast_getfield

The fix disables "fast" command generation when FieldAccess or 
FieldModification notifications are requested.

jira: https://bugs.openjdk.java.net/browse/JDK-8193369
webrev: http://cr.openjdk.java.net/~amenkov/fast_field_access/webrev/

--alex