[svn r330] Implemented synchronized statements. Changed the tryfinally handlers to a more generalized EnclosingHandler. Changed ClassInfoS to be mutable so they can be used as locks. Added new BB after throw ala return/break etc.

module bug5;

struct hah {
    static hah f()
    {
        hah res;
        return res;
    }
    hah g()
    {
        return hah.init;
    }
}

void main()
{
}