CookiePolicy implementations decide which cookies should be accepted
and which should be rejected. Three pre-defined policy implementations
are provided, namely ACCEPT_ALL, ACCEPT_NONE and ACCEPT_ORIGINAL_SERVER.
See RFC 2965 sec. 3.3 & 7 for more detail.
version: %I%, %E% author: Edward Wang since: 1.6
Will be called to see whether or not this cookie should be accepted.
Parameters: uri - the URI to consult accept policy with Parameters: cookie - the HttpCookie object in question true if this cookie should be accepted;otherwise, false