patch to bring java vtables closer to g++ abi conformance

[Bryce McKinlay]

Daniel Jacobowitz wrote:

>As far as this goes, do whatever you want - but put the symbol name for
>the vtable where it would be if this were a C++ class. 
>
Assuming pre-generated (rather than runtime) vtables, wont the symbol 
will always point to the real start of the vtable? In C++ I believe the 
two-words-at-negative-offset thing only applies to single inheritance. 
There could be more data at a negative offset with a more complex class 
heirarchy.

For binary compatibility, there isn't a symbol for the vtable at all 
because the vtable isn't laid out until runtime.

regards

Bryce.