PHPLIB-92: Update methods should use "multi" option
PHPLIB-92: Update methods should use "multi" option

10gen-labs/mongo-php-library-prototype,mongodb-labs/mongo-php-library-prototype,mongodb/mongo-php-library,Fiskie/mongo-php-library,jmikola/mongo-php-library,derickr/mongo-php-library,mongodb/mongo-php-library,jmikola/mongo-php-library,jmikola/mongo-php-library,derickr/mongo-php-library,Kozzi11/mongo-php-library-prototype,jmikola/mongo-php-library,serebro/mongo-php-library-prototype,mongodb/mongo-php-library,jaleelzhang/mongo-php-library-prototype,jmikola/mongo-php-library-prototype,derickr/mongo-php-library-prototype,mongodb/mongo-php-library