(isd-turtle-ccs-list): Abolished.

(isd-turtle-ccs-list): Abolished.
(chise-turtle-ccs-prefix-alist): New variable.
(chise-turtle-uri-encode-ccs-name): Renamed from
`isd-turtle-uri-encode-feature-name'; encode `+' and `='.
(chise-turtle-format-ccs-code-point): Renamed from
`isd-turtle-format-ccs-code-point'; update
`chise-turtle-ccs-prefix-alist' instead of `isd-turtle-ccs-list'.
(isd-turtle-encode-char): Use `chise-turtle-format-ccs-code-point'
instead of `isd-turtle-format-ccs-code-point'.
(isd-turtle-format-char): Add new optional variables `prefix' and
`without-head-char'.
(isd-turtle-dump-range): Use `chise-turtle-ccs-prefix-alist' instead
of `isd-turtle-ccs-list'.