Work in progress: WC "add node" including the props

Just for information, here's the patch showing what I am working on.  The log message is at the top of the patch and begins: "Teach some WC and client 'add' functions to take the properties as a parameter so that the whole addition including any properties can be done all at once.  ..." - Julian -- Certified & Supported Apache Subversion Downloads: http://www.wandisco.com/subversion/download