[boost] [shifted_ptr] <T []> support, VC 8 certified, bug fix

From: Phil Bouchard (philippe_at_[hidden])
Date: 2008-04-01 06:06:00

Greetings:

I got slowed down by a bug but fortunately I put my hands on it;
- I fixed and updated the version in the Vault.
- I have also made the headers compile fine under VC 8 but I haven't checked 
out the executable (missing objects).
- I added safer support for array objects by limiting to access operator []
- I have replace "make_shifted_ptr" with "make_shifted_ptee" for efficiency 
reasons.  It is possible to fall it back to its predecessor but requires 
some work,
- I wanted to change the way sets are merge and did so.

Todo:
- Documentation.

BTW I think Shifted Pointer got removed from the review schedule.  I thought 
I didn't need documentation at that point but this is a short notice.

Regards,
-Phil