Update lightncandy vendor files

Now matches commit e9f17fd38bf85d0b20575fbe99095db6b5f3a383
from http://github.com/zordius/lightncandy

Change-Id: I2a1bae212c22c9de4bf8c5e64ecfa7e0a5a140ef
re-apply custom lightncandy block helpers

Change-Id: If7da4554378a4d972b73b476ece09896993badf8