#26 MySQL 8 build fixes

[Andreas Hasenack]

cppdb is failing to build on Ubuntu systems due to MySQL8 changes. Here are two patches that Ubuntu has been carrying:
https://git.launchpad.net/ubuntu/+source/cppdb/tree/debian/patches/mysql-8.0
https://git.launchpad.net/ubuntu/+source/cppdb/tree/debian/patches/mysql8_my_bool.patch

We haven't tested if it will still build with mysql older than 8 with these patches applied.

I'm also attaching them for convenience.