[added] Functionality to lair observers to get spawned creature vector
[fixed] Not getting the correct amount of experience when destroying a
lair (mantis not reported), with lock checks.

Change-Id: I5bcb4dc6ff253fb26a11c9a11ae7a64b070e7adc
Merge "[added] Functionality to lair observers to get spawned creature vector [fixed] Not getting the correct amount of experience when destroying a lair (mantis not reported), with lock checks." into unstable