boost/xml/dom/attribute.hpp

	* moved ptr_factory out of detail namespace

boost/xml/dom/detail.hpp
	
	* moved factory and ptr_factory out of detail namespace
	* Added 'operator bool' to class 'wrapper' (see boost/xml/dom/node.hpp diffs for more explanation)
	* Added iterator_category and difference_type to node_iterator - MSVC8 std::for_each wouldn't compile without them

boost/xml/dom/document.hpp

	* moved factory out of detail namespace
	* Visual Studio has helpfully removed tabs
	* Removed throw specifications to get rid of VC++ warning 'warning C4290: C++ exception specification ignored except to indicate a function is not __declspec(nothrow)'.

boost/xml/dom/element.hpp

	* moved ptr_factory out of detail namespace
	* added 'node_ptr<element<S> >' as a friend - I'm not entirely sure *why* (I can't see any default node_ptr constructions, but that's where error messages are being raised), but I needed this to compile the following function:
	
	   bool is_named_element(node_ptr n, std::string const& name)
	   {
	      return (n->type()==bxd::ELEMENT) && (boost::xml::dom::cast<element_ptr>(n)->name() == name);
	   }

	* One of the text editors I use (TextPad, I think) has removed trailing spaces from lines
	* set_attribute needed a cast from an xmlAttr pointer to xmlNode. Fair enough as xmlAttr isn't implicitly castable to xmlNode (as the inheritance relationship is implicit)
	* Needed to add 'typename ' to element<S>::remove parameter declaration. Alternatively, change the parameter type to 'child_iterator' instead of 'element<S>::child_iterator', which would also match the other methods.

boost/xml/dom/node.hpp

	* Added '#include <string>' - MSVC doesn't want to find operator+ for std::string without it.
	* Changed implementation of 'operator bool' - 'boost::xml::dom::detail::wrapper<T>::impl' is declared private, so this operator can't see it. That's why I added an 'operator bool' to class 'wrapper' in detail.hpp
	* moved ptr_factory out of detail namespace
	* One of the text editors I use (TextPad, I think) has removed trailing spaces from lines

boost/xml/dom/node_set.hpp

	* moved ptr_factory out of detail namespace
	* One of the text editors I use (TextPad, I think) has removed trailing spaces from lines

boost/xml/dom/parser.hpp

	* moved factory out of detail namespace
	* Changed 'well_formed' initialiser in 'parse_file' to get rid of MSVC warning 'warning C4800: 'int' : forcing value to bool 'true' or 'false' (performance warning)'.