(ccl-encode-mac-roman-font, ccl-encode-mac-centraleurroman-font)

(ccl-encode-mac-roman-font, ccl-encode-mac-centraleurroman-font)
(ccl-encode-mac-cyrillic-font, ccl-encode-mac-symbol-font):
(ccl-encode-mac-dingbats-font): Remove check for ASCII.  Change
charset-id boundary of dimension to ?\xef.
(mac-char-fontspec-list): New constant.
(fontset-add-mac-fonts): Use it.  Accept non-string `base-family'
argument.  Nil uses itself as family in font-spec.  Previous
behavior for nil is now provided by non-nil non-string argument.
All callers changed.  Add font-specs for Mac fonts to
"fontset-default" unless iso8859-1 fonts are installed.