[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 aa3;

void main()
{
    int[string] aa;
    {aa["hello"] = 1;}
    {int* p = "" in aa;}
    aa[" worl"] = 2;
    aa["d"] = 3;
    aa["thisisgreat"] = 10;
    int sum;
    string cat;
    {
    foreach(k,v;aa)
    {
        printf("int[%.*s] = %d\n", k.length, k.ptr, v);
        sum += v;
        cat ~= k;
    }
    }
    assert(sum == 16);
    printf("cat = %.*s\n", cat.length, cat.ptr);
    assert(cat.length == 22);
}