Change rand and randn back to not take tuple argument.  Alter docstring to alert user what function to use to pass in a tuple.
Change rand and randn back to not take tuple argument.  Alter docstring to alert user what function to use to pass in a tuple.

git-svn-id: 77a43f9646713b91fea7788fad5dfbf67e151ece@2577 94b884b6-d6fd-0310-90d3-974f1d3f35e1

teoliphant/numpy-refactor,Ademan/NumPy-GSoC,Ademan/NumPy-GSoC,Ademan/NumPy-GSoC,efiring/numpy-work,chadnetzer/numpy-gaurdro,chadnetzer/numpy-gaurdro,teoliphant/numpy-refactor,illume/numpy3k,illume/numpy3k,jasonmccampbell/numpy-refactor-sprint,teoliphant/numpy-refactor,illume/numpy3k,Ademan/NumPy-GSoC,efiring/numpy-work,chadnetzer/numpy-gaurdro,illume/numpy3k,jasonmccampbell/numpy-refactor-sprint,efiring/numpy-work,chadnetzer/numpy-gaurdro,teoliphant/numpy-refactor,jasonmccampbell/numpy-refactor-sprint,teoliphant/numpy-refactor,efiring/numpy-work,jasonmccampbell/numpy-refactor-sprint