fixes bug 153888 "'Redirection limit' error dialog should implicate cookie blocking"

r=adamlock sr=rpotts

docshell/resources/locale/en-US/appstrings.properties

@@ -24,7 +24,7 @@ protocolNotFound=%S is not a registered protocol.
 connectionFailure=The connection was refused when attempting to contact %S.
 netInterrupt=The connection to %S has terminated unexpectedly. Some data may have been transferred.
 netTimeout=The operation timed out when attempting to contact %S.
-redirectLoop=Redirection limit for this URL exceeded.  Unable to load the requested page.
+redirectLoop=Redirection limit for this URL exceeded.  Unable to load the requested page.  This may be caused by cookies that are blocked.
 repost=The page you are trying to view contains POSTDATA that has expired from cache. If you resend the data, any action the form carried out (such as a search or online purchase) will be repeated. To resend the data, click OK. Otherwise, click Cancel.
 repostConfirm=The page you are trying to view contains POSTDATA. If you resend the data, any action the form carried out (such as a search or online purchase) will be repeated. To resend the data, click OK. Otherwise, click Cancel.
 unknownSocketType=This document cannot be displayed unless you install the Personal Security Manager (PSM). Download and install PSM and try again, or contact your system administrator.