test: Add external test for ufuncify() order of arguments

See issue 2971 at https://github.com/sympy/sympy/issues/2971
autowrap: correct order of arguments, fix #2971

Someone needs to have a look at this, as I am not sure what this 'm' is
all about.
Merge pull request #3000 from hsgg/ufuncify_argument_order

Ufuncify argument order