work around missing _v2 functions on old libsqlite3 versions
work around missing _v2 functions on old libsqlite3 versions

Missing sqlite3_next_stmt is still a problem, but harder to work
around.

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket