Bob Hillman in the East Bay Dear Everyone,   I will be performing at Strings, a listening room in Emeryville, on Tuesday, September 4.  Also on the bill are Caren Armstrong, who hosts the monthly songwriter's night, and three others whose names I don't have at press time.  Here are the details:   Tuesday, 4 September Strings 6320 San Pablo Ave. Emeryville 510/653-5700 www.strings.org  Doors 7:30pm/Show 8:00pm   Hope you can make it!