Issue 797: default odata routing conventions is missing support for url's
generated by WCF DS client

1) mapping POST ~/Customers(42)/Orders to PostToOrders.

2) mapping POST ~/Customers(42)/Ns.SpecialCustomer/SpecialOrders to
PostToSpecialOrdersFromSpecialCustomer

3) mapping PUT/POST to
~/Customers(42)/Ns.SpecialCustomer/$links/SpecialOrders to
CreateLinkToSpecialOrdersFromSpecialCustomer

4) Also, changing links routing convention to route to
CreateLinkTo{navProperty} if that method is declared instead of just
CreateLink.