As the holiday season kicks into high gear, there are a lot of shows to take in this weekend. Here’s a partial rundown. On stage: ‘Mahalia’ world premiere; ‘Little Shop’ A world premiere musical about gospel legend Mahalia Jackson a new take on the classic musical comedy “Little Shop of Horrors” are coming to Bay Area stages. Here’s a look. “Little Shop of Horrors”: If you’ve ever seen the deliciously silly black comedy/musical by Alan Menken and Howard Ashman and wondered what it be like if they set the action in San Francisco’s Chinatown, you’re about to get your answer....