fixed sanity check (mysqli_connect is also allowed now)
Merge pull request #161 from swiffer/master

added mysqli_connect to mysql sanity check
do not try to log to sql on old schema version
revert OO-db access in dbupdater, create DbUpdater() correctly
Merge branch 'master' of github.com:gothfox/Tiny-Tiny-RSS
update: only wait when pidlock is enabled
Merge remote-tracking branch 'upstream/master'