- For RPC modules: add a string, 'rpc_uri', in PFpnode_t to hold the URI   given by the 'at' hint, when necessary.  If a function is declared in   an RPC module or if a function call is calling an RPC function,   'rpc_uri' contains the URI string; otherwise, it is a NULL pointer.
- For RPC modules: add a string, 'rpc_uri', in PFpnode_t to hold the URI
  given by the 'at' hint, when necessary.  If a function is declared in
  an RPC module or if a function call is calling an RPC function,
  'rpc_uri' contains the URI string; otherwise, it is a NULL pointer.

  Later on, the RPC sender needs this URI to send to the RPC receiver so
  that the receiver can know from where the module kan be loaded.
  Currently, this URI is incorrectly given as the module namespace.
  Henceforce, the module namespace and the URI of the module are given
  separately, so that the RPC receiver can do a sanity check on the
  module namespace it receives.

  --TODO: implement the sanity check.

- Some more 'soap' to 'rpc' name changings.

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb