Create a new fontset NAME from font information in FONTLIST.
FONTLIST is an alist of scripts vs the corresponding font specification list.
Each element of FONTLIST has the form (SCRIPT FONT-SPEC ...), where a
character of SCRIPT is displayed by a font that matches one of
SCRIPT is a symbol that appears in the first extra slot of the
FONT-SPEC is a vector, a cons, or a string. See the documentation of
`set-fontset-font' for the meaning. (fn NAME FONTLIST)