(est-coded-charset-priority-list): Add `=ucs-itaiji-084',

(est-coded-charset-priority-list): Add `=ucs-itaiji-084',
`=ucs-var-002', `=ucs-var-004' and `=>ucs-itaiji-001'.
(isd-turtle-dump-ucs-ext-b-1): New function.
(isd-turtle-dump-ucs-ext-b-2): New function.
(isd-turtle-dump-ucs-ext-b-3): New function.
(isd-turtle-dump-ucs-ext-b-4): New function.
(isd-turtle-dump-ucs-ext-b-5): New function.
(isd-turtle-dump-ucs-ext-b-6): New function.
(isd-turtle-dump-ucs-ext-c): New function.
(isd-turtle-dump-ucs-ext-d): New function.
(isd-turtle-dump-ucs-ext-e): New function.
(