[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 bug55;

int atoi(char[] s) {
    int i, fac=1;
    bool neg = (s.length) && (s[0] == '-');
    char[] a = neg ? s[1..$] : s;
    foreach_reverse(c; a) {
        i += (c-'0') * fac;
        fac *= 10;
    }
    return !neg ? i : -i;
}

void main()
{
    printf("64213 = %d\n", atoi("64213"));
    printf("-64213 = %d\n", atoi("-64213"));
    assert(atoi("64213") == 64213);
    assert(atoi("-64213") == -64213);
}