C++ Network Library Code

Adding missing simple_wget quickbook file.

I added some tests for the URI. Added a simple wget example, including documentation.

Merging from urllib-dean r205.

Implementing tag-based dispatching for string type deduction in the hostname parser.

Test and supporting implementation for invalid formatted hostnames.

Integrating URI implementation to be used in HTTP request message.

Adding network client and server hints.

Using Boost.Spirit classic includes and namespace.

Cleanup of http message test, removing redundant namespace using declarations.