Restore Collection::_massageFindAndModifyOptions()
Restore Collection::_massageFindAndModifyOptions()

This was inadvertently removed in 495e46d4ddb3980126635f2397e4301d94f6c262.

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