Gsql prepared statements

Audit list
 - [ ] GSQLBackend
 - [ ] SSql
 - [x] gMySQL
 - [ ] gPgSQL
 - [ ] gSqlite3
 - [ ] gOracle
 - [ ] BIND (dnssec)
 - [ ] mydns
the schema pdns/modules/mydnsbackend/schema.mydns.sql doesnt have the "active" column, so if you use the minimal conf set:

launch=mydns
mydns-user=pdns
mydns-password=xxxxxx
mydns-dbname=mydns

you got: Cannot prepare statements: Could not prepare statement: Unknown column 'active' in 'where clause'