67799, 55814. sr=bienvenu. Do UIDL implemenetation when we don't leave messages on the server. if write has failed to alert the user and stop downloading messages

mailnews/local/src/nsPop3Protocol.h

@@ -134,9 +134,7 @@ enum Pop3StatesEnum {
     POP3_SEND_GURL,                             // 35
 
     POP3_GURL_RESPONSE,                         // 36
-#ifdef POP_ALWAYS_USE_UIDL_FOR_DUPLICATES
     POP3_QUIT_RESPONSE,
-#endif
     POP3_INTERRUPTED
 };