[normalize] cstring_array instead of string_tree for token-based normalization

src/normalize.h

@@ -58,7 +58,7 @@ char *normalize_string_utf8(char *str, uint64_t options);
 char *normalize_string_latin(char *str, size_t len, uint64_t options);
 
 // Takes NORMALIZE_TOKEN_* options
-void add_token_alternatives(string_tree_t *tree, char *str, token_t token, uint64_t options);
+void normalize_token(cstring_array *array, char *str, token_t token, uint64_t options);
 
 // Takes NORMALIZE_STRING_* options
 string_tree_t *normalize_string(char *str, uint64_t options);