[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 bug30;

void main()
{
    int[] a = new int[4];
    {a[0] = 1;
    a[1] = 2;
    a[2] = 3;
    a[3] = 4;}
    int[] b = new int[4];
    {b[0] = 1;
    b[1] = 2;
    b[2] = 3;
    b[3] = 4;}
    int[] c = new int[4];
    {c[0] = 1;
    c[1] = 2;
    c[2] = 4;
    c[3] = 3;}
    {assert(a == b);}
    {assert(a != c);}
}