[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 :/

void main()
{
    printf("Testing functions\n");
    int i = 5;
    assert(a(i) == 110);
    assert(i == 11);

    S s;
    s.i = 5;
    d(s);
    assert(s.i == 5);
    e(s);
    assert(s.i == 6);

    printf("  SUCCESS\n");
}

int a(ref int i)
{
    i*=2;
    return b(i);
}

int b(ref int i)
{
    i++;
    return c(i);
}

int c(int i)
{
    return i*10;
}

struct S
{
    int i;
}

void d(S s)
{
    s.i++;
}

void e(ref S s)
{
    s.i++;
}