Move the socket functions like insp_ntoa into their own namespace. They arent really...

Move the socket functions like insp_ntoa into their own namespace. They arent really sensible to put into a class, but namespacing them out discourages developers from directly using them without explicitly saing 'using irc::sockets::BindPorts' or whatever first. Some functions such as insp_ntoa are already 'exposed' by headers that use them so 'using irc::sockets::inet_ntoa' isnt required.

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@4828 e03df62e-2008-0410-955e-edbf42e46eb7