Hi
This is an updated version of the long format VHPT patch
posted earlier.
Changes:
Added #ifdef to allow compile without long format
Updated compute_vhpt_size(void) to remove compiler 
warnings
Added comments to explain some code fragments.

Tested with
- SMP
- UP

Require 
- NUMA testing.
- comments

Thanks

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Darren Williams <dsw@gelato.unsw.edu.au>
Gelato@UNSW <www.gelato.unsw.edu.au>
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