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A service's condition was computed with mkcond() at each of the six sites that assert or clear it, and svc_find_by_cond() reimplemented the reverse lookup a seventh time. maybe_clear_cond() had its own scan for another service supplying the same condition. svc_cond_owner() answers who owns a condition, svc_cond_nth() walks the conditions a service owns, and svc_cond_set()/svc_cond_clear() apply to all of them. svc_find_by_cond() becomes a wrapper, and maybe_clear_cond() keeps its rule per condition rather than for the one it used to compute. The provides[] storage lands here unused, since svc_cond_nth() reads num_provides. Nothing sets it yet, so a service still owns exactly its own pid/<ident> and there is no functional change. Signed-off-by: Joachim Wiberg <troglobit@gmail.com>