Adding *args to fmin

Hi, I've added an additional *args argument to fmin. For examples see

the `args` variable at
http://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.fmin.html#scipy.optimize.fmin

and the `non_sequences variable` at 
http://deeplearning.net/software/theano/library/scan.html#theano.scan

I've tested it with my code and it works. I haven't run the regression tests because I'm on a Windows dev machine and I see that some of the script files are Linux only. Will try to run them soon.