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

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