tests+docs for Randist, dirichlet/multinomial working
… corresponding tests
…t functions working. test/doc updated
…lang function entries. added 'Not Implemented' notes where applicable. Other entries were all reformatted a bit so it renders better.
…ran_dirichlet and improve the names of other Randist tests
* build using the latest appropriate bindings if we haven't exact match on current GSL version * small improvements (use of catfile(), etc.)