BLD: spring cleaning on Makefile
I have I idea how to test this
but looks ok
 manual testing ... really only a dev and power user feature ... most ppl prob not using make
 @cpcloud seems ok....I guess rebase and put it in...we'll see
 well this caused a kitten to die

https://travis-ci.org/pydata/pandas/jobs/22389411
 how ironic that that was a bug i fixed
 that test works on py27 mpl 1.3.1, trying with 1.3.0
 hm well it appears `pip install matplotlib==1.3.0` doesn't work
 oh fudge the `random.choice` probably only choice a single value, therefore creating a single plot and thus failure ... i'll make it not random
 I think 1.3.0 got removed somehow....1.3.1 is current
 odd though because I rebuilt the wheels just recently....
