* -L isn't sufficient for specifying the path of the Cyrus SASL

  shared library.  That'll allow us to link successfully, but on
  many/most OSes that won't allow us to find libsasl at runtime.  On
  Solaris, we need to specify the library path with -R as well (or
  else the user will have to use the $LD_LIBRARY_PATH kludge, which
  is considered harmful).  This fix should be extended to other OSes
  as well.

* Print whether we have SASL support in the "nmh configuration"
  summary configure prints out.