[svn r229] Updated the object.d implementation to the latest Tango. Fixed a bunch of the built-in typeinfos for arrays, they did not inherit TypeInfo_Array. Applied patch to tango/text/convert/Layout.d by fvbommel, closes #47 . Cleaned up some type code. Replaced uses of llvm::Type with LLType (a typedef), same for Value and Constant. Fixed a few cases where typeinfo for user structs could be emitted multiple times, seems to still be some cases of this :/

module e;

struct C
{
    float x=0,y=0;

    float dot(ref C b)
    {
        return x*b.x + y*b.y;
    }
}

void main()
{
    C a,b;
    a.x = 2;
    a.y = 6;
    b.x = 3;
    b.y = 5;
    float f = a.dot(b);
    printf("%f\n", f);
    assert(f == 36);
}