RFR: turn off critical jni

[Fedor Burdun]

> > Since aarch32 has no support critical jni entries (a most of required routines are unimplemented).
> > I would like to suggest to turn off this feature.
> >
> > The idea it to switching off this flag in VM_Version::initialize()
> > although it is not the best place to do such things I can't find any better one.
> 
> OK, but we should probably think of this as temporary.  Please add
> a FIXME comment.
> 
> Andrew.

The patch is updated.
Also the patch removing confusing resetting of UseBiasedLocking flag is added.

Fedor

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