Add tests for gensalt(prefix) functionality
Add tests for gensalt(prefix) functionality

alex/bcrypt,pyca/bcrypt,reaperhulk/bcrypt,growingdever/bcrypt,growingdever/bcrypt,pyca/bcrypt,reaperhulk/bcrypt,pyca/bcrypt,reaperhulk/bcrypt,alex/bcrypt,reaperhulk/bcrypt,growingdever/bcrypt,alex/bcrypt,pyca/bcrypt