Sacramento soon may get something it hasn't seen in decades -- new water troughs and hitching posts. And folks, that ain't nothin' to snort at. Especially if you're a police horse on your appointed rounds. Seventy to 80 years after falling out of use, horse-friendly street hardware may make its way into alleys that are being developed as part of a new "alley activation" effort. A trough and a post, paid for through private funding, will be added first to one of two pilot alleys under development in the Handle District. More are possible on other Midtown alleys as property owners get involved in the effort, said Julie Young, a developer who launched the organized alley-use movement here.