STLplus C++ library collection SVN stlplus3

Clarified why private constructors are actually public

Reworded explanation to clarify what the problems are in the STL and
how SLplus iterators solve them.

Removed old diagnostic code, simplified comparison methods, added
diagnostic messages to exceptions

Added move methods to allow for trees to be combined without copying,
renamed append->insert for consistency, leaving append methods as
undocumented backward-compatibility methods

C++0x mode doesn't like me passing 0 as the value of a void* to a
template function

DJDM's addition - operator< to allow triple/foursome to be used in a map

Added stlplus3.hpp header file for monolithic build only

Added mention of stlplus3.hpp header file for monolithic build only

Fixed bug in ntree::cut which still used the old name set_new_owner
for the ntree_node::change_owner method

reworked the build information to allow the elements to be retrieved