allow filters for local folders account, because of pop3 global inbox, sr=mscott 177093

mailnews/base/util/nsMsgIncomingServer.cpp

@@ -93,7 +93,7 @@ nsMsgIncomingServer::nsMsgIncomingServer():
     m_prefBranch(0),
     m_biffState(nsIMsgFolder::nsMsgBiffState_NoMail),
     m_serverBusy(PR_FALSE),
-    m_canHaveFilters(PR_FALSE),
+    m_canHaveFilters(PR_TRUE),
     m_displayStartupPage(PR_TRUE),
     mPerformingBiff(PR_FALSE)
 {