Added option to convert to mysqli during upgrade

Signed-off-by: jdarwood007 <github2@sleepycode.com>
 Only show MySQLi if the server supports it

Signed-off-by: jdarwood007 <github2@sleepycode.com>
 Only show MySQLi if the server supports it

Signed-off-by: jdarwood007 <github2@sleepycode.com>
Merge pull request #557 from jdarwood007/mysqli-upgrade

 Added option to convert to MySQLi during upgrade