cmake HAVE_ISWLOWER examples

arkdb/inception cmake/readline.cmake :47 

CHECK_FUNCTION_EXISTS(iswlower HAVE_ISWLOWER)

alibaba/AliSQL cmake/readline.cmake :49 

CHECK_FUNCTION_EXISTS(iswlower HAVE_ISWLOWER)

Tokutek/mysql-5.5 cmake/readline.cmake :47 

CHECK_FUNCTION_EXISTS(iswlower HAVE_ISWLOWER)