rfc: remove "revision specs"

[Jari Aalto]

Jan Hudec <bulb at ucw.cz> writes:
> That said I start to think that file:// and http:// and sftp:// are
> appropriate, but the later two only if they don't use special server.

Small note: it's file:///  and not file://. The RFC standard [*] states
that file://localhost/path is special case and 'localhost' can be 
left out; thus file:///path

Jari

[*] RFC 1738 / Uniform Resource Locators (URL) / 3.10 FILES
    http://www.ietf.org/rfc/rfc1738.txt

   A file URL takes the form:

       file://<host>/<path>

   ...
   As a special case, <host> can be the string "localhost" or the empty
   string; this is interpreted as `the machine from which the URL is
   being interpreted'.