Rename from smart_ptr to policy_ptr.

svn path=/sandbox/boost/smart_ptr/; revision=552
Initial commit

svn path=/sandbox/libs/smart_ptr/; revision=877
Add weak_ptr motivation and Reference section

svn path=/sandbox/libs/smart_ptr/; revision=878
Initial skeleton.

svn path=/sandbox/libs/smart_ptr/; revision=883
Add Meyers quote, other small changes

svn path=/sandbox/libs/smart_ptr/; revision=924
Added part of the proposed text.

svn path=/sandbox/libs/smart_ptr/; revision=926
More proposed text.

svn path=/sandbox/libs/smart_ptr/; revision=927
Even more proposed text.

svn path=/sandbox/libs/smart_ptr/; revision=928
get_shared_ptr -> weak_ptr::lock

svn path=/sandbox/libs/smart_ptr/; revision=937
'General Principles' text added.

svn path=/sandbox/libs/smart_ptr/; revision=1005
More Design Decisions text added.

svn path=/sandbox/libs/smart_ptr/; revision=1008
More shared_ptr text.

svn path=/sandbox/libs/smart_ptr/; revision=1012
More text, edits.

svn path=/sandbox/libs/smart_ptr/; revision=1015
More edits.

svn path=/sandbox/libs/smart_ptr/; revision=1016
More shared_ptr design decisions (custom deleters, etc.)

svn path=/sandbox/libs/smart_ptr/; revision=1017
shared_ptr::operator<

svn path=/sandbox/libs/smart_ptr/; revision=1018
shared_ptr casts section added.

svn path=/sandbox/libs/smart_ptr/; revision=1019
get_deleter.

svn path=/sandbox/libs/smart_ptr/; revision=1020
weak_ptr done.

svn path=/sandbox/libs/smart_ptr/; revision=1021
Minor edits.

svn path=/sandbox/libs/smart_ptr/; revision=1022