Fixed the bug that prevents cookies from being sent to the
server
if the domain of cookie is FQDN and starts with ".".
* src/Cookie.cc (match)
To add the ability to change peer id.
* src/DefaultBtContext.h
(_peerIdPrefix): New variable
(setPeerIdPrefix): New function.
* src/torrentRequestInfo.cc
(execute): Set the option value of PREF_PEER_ID_PREFIX to
DefaultBtContext.
* src/main.cc (main): Added peer-id-prefix command-line option.
The usage message is not added yet.
* src/DefaultBtContext.cc
(generatePeerId): Use _peerIdPrefix.
* src/prefs.h (PREF_PEER_ID_PREFIX): New definition.