Revert some changes to the selection and reselection code that were thought
to fix a selection timeout problem.

If we can't find an SCB for the reconnecting target, issue a bus device
reset as the SCSI2 spec suggests.

Add a missing call to "add_scb_to_free_list" in the non paging case. In
the non-paging case, the SCBs don't really need to be on the free list,
but putting them there clears the tag field which is something the recovery
code depends on.