Added freeze method to distributions which returns a frozen class that has fixed shape, location, and scale parameters.  No checking done yet, so errors on construction are not detected until first call of frozen methods.
Added freeze method to distributions which returns a frozen class that has fixed shape, location, and scale parameters.  No checking done yet, so errors on construction are not detected until first call of frozen methods.


git-svn-id: 77a43f9646713b91fea7788fad5dfbf67e151ece@579 94b884b6-d6fd-0310-90d3-974f1d3f35e1

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