cmake HAVE_WCTYPE examples

arkdb/inception cmake/readline.cmake :46 

CHECK_FUNCTION_EXISTS(wctype HAVE_WCTYPE)

alibaba/AliSQL cmake/readline.cmake :48 

CHECK_FUNCTION_EXISTS(wctype HAVE_WCTYPE)

Tokutek/mysql-5.5 cmake/readline.cmake :46 

CHECK_FUNCTION_EXISTS(wctype HAVE_WCTYPE)