cmake HAVE_TOWUPPER examples

arkdb/inception cmake/readline.cmake :50 

CHECK_FUNCTION_EXISTS(towupper HAVE_TOWUPPER)

alibaba/AliSQL cmake/readline.cmake :52 

CHECK_FUNCTION_EXISTS(towupper HAVE_TOWUPPER)

Tokutek/mysql-5.5 cmake/readline.cmake :50 

CHECK_FUNCTION_EXISTS(towupper HAVE_TOWUPPER)