(est-coded-charset-priority-list): Add `=ucs-itaiji-004',

(est-coded-charset-priority-list): Add `=ucs-itaiji-004',
`=ucs-itaiji-005', `=ucs-itaiji-006', `=ucs-itaiji-007',
`=ucs-itaiji-008', `=ucs-itaiji-009', `=ucs-itaiji-010',
`=ucs-itaiji-011', `=ucs-itaiji-084', `=ucs-var-001', `=ucs-var-002',
`=ucs-var-003', `=ucs-var-004', `=>ucs-itaiji-002',
`=>ucs-itaiji-003', `=>ucs-itaiji-004', `=>ucs-itaiji-005',
`=>ucs-itaiji-006' and `=>ucs-itaiji-007'.
(www-format-encode-string): Display "&(A-)CDP-iddd-hhhh;".
(coded-charset-GlyphWiki-id-alist): Add settings for `=ucs-var-004',
`=>ucs-itaiji-006', `=big5-cdp-itaiji-001', `=big5-cdp-itaiji-002' and
`=>big5-cdp-itaiji-001'.