[Bug] DatabasePresenceVerifier not working for booleans in the additional conditions #3927 

Change comparison operator from 'Equal' to 'Identical' when comparing value to 'NULL'/'NOT_NULL', so a comparison with a boolean value returns correct result.
Loosened queuing dependencies
Merge pull request #3942 from GrahamCampbell/4.2-queuing

[4.2] Loosened Queuing Dependencies
Merge pull request #3928 from lpopov/4.1

[Bug] DatabasePresenceVerifier not working for booleans in the additional conditions #3927
Fix tabs.
Merge branch '4.1'
Update CookieJar.php

changed php doc to match method
Merge pull request #3949 from xtrasmal/patch-1

Update CookieJar.php