krb5-libs/1022: accept_sec_context() specifies principal to rd_req()

[Sam Hartman]

>>>>> "Nicolas" == Nicolas Williams <Nicolas.Williams at ubsw.com> writes:

    Nicolas> Why not use the default credential, GSS_C_NO_CREDENTIAL
    Nicolas> and then inquire the context for the acceptor name?

I don't think our implementation supports this.  I argue that this is
the correct solution and am leaving the bug open in the hope that
someone (either at MIT or in the larger community) will get around to
writing such support.