[svn r188] Fixed using a dereferenced pointer argument as both l- and r-value. fixes tango.io.FileRoots. Reorganized the tangotests dir a bit.

module complex3;

void main()
{
    cfloat c1 = 1f + 0i;
    cfloat c2 = 0f + 0i;
    c2 += 1f + 0i;
    //assert(c1 == c2);
}