Please review the following change.
Background:
The _unloading field is a static field in ClassLoaderDataGraph (in
classLoaderData.hpp) and should therefore be defined using static_field,
as opposed to nonstatic_field, in vmStructs.
Apart from changing from nonstatic_field to static_field I also added an
assert in the CHECK_NONSTATIC_VM_STRUCT_ENTRY macro to make sure any
field offsets are within the bounds of the corresponding structs. The
assert triggers for _unloading before the change to static_field.
The change passes JPRT.
http://cr.openjdk.java.net/~mikael/8005592/webrev.00/
Thanks,
Mikael
