[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 nested4;

void func(void delegate() dg) {
  auto v = (){
    dg();
  };
}

void main()
{
    func({});
}