[svn r111] Fixed most problems with complex number support and added typeinfo for them. Added typeinfo ti_C. Did some changes to the way expressions that have both lvalue and rvalue LLVM values are handled.

module imports_1of2;

import imports_2of2;

void main()
{
    assert(func() == 42);
    S s;
    s.l = 32;
    assert(s.l == 32);
}