for a reason other than work fetch,
    and we're deciding whether to piggyback a work request,
    skip the checks for hysteresis (buffer < min)
    and for per-resource backoff time.
    These checks are there only to limit the rate of RPCs,
    which is not relevant since we're doing one any.

    This fixes a bug where a project w/ sporadic jobs specifies
    a next_rpc_delay to ensure regular polling from clients.
    When these polls occur they should request work regardless of backoff.


svn path=/trunk/boinc/; revision=26002