Coercing float typedef to complex creates erronous C code

[dagss]

This code doesn't C-compile:

ctypedef double mydouble
def test_coerce_typedef_multiply(mydouble x, double complex z):
    return x * z

The problem is that the resulting complex of the multiplication operation is defined before mydouble. I'll post to the ML for discussion.

Testcase for this ticket added on -T305.

[dagss]

Temporarily disabled such coercions. That's rather ugly, especially as the obvious workaround <double complex>foo doesn't work either. Should be rather important for 0.12.1.

 http://hg.cython.org/cython-devel/rev/c6a27fd42d87

[dagss]

 http://hg.cython.org/cython-devel/rev/76e7121cbdc7