Aug 29 - The San Francisco Giants continued toshow stability atop the National League West with a 6-4 victoryover the Houston Astros on Wednesday. In winning for the seventh time in nine games, the Giants(73-57) kept their 3 1/2-game lead over the Los Angeles Dodgerswho recently strengthened their roster with a blockbuster tradeacquiring Adrian Gonzalez, Josh Beckett and Carl Crawford fromBoston. ...