CCBC-562: Improve cbc help text when using deprecated options

We want people to stop using -h and 8091 for obvious reasons (mainly
because the client usually never connects to that port).

Change-Id: I97f7725b09841aa6952cc9cbda33992251b584f1
Reviewed-on: http://review.couchbase.org/44532
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>
Tested-by: Mark Nunberg <mnunberg@haskalah.org>