Results 2 issues of Lipin Dmitriy

Hi! Seem that driver doesn't properly check for error after call to `mysql_store_result`. Currently, it calls `mysql_field_count` when `mysql_store_result` returns `NULL` but throws an error only if `mysql_field_count` result is...

Hi! This patch add support (partial) for https://github.com/msgpack/msgpack/blob/master/spec.md#bin-format-family. Only unpack is implemented, because i don't know what lua type should be mapped to bin{8,16,32}. If there is one - let...