Had to find a balance in the sunlight intensity calculation that behaves correctly for
both these issues.

Small change to CMake options to only enable the PreferredToolArchitecture=x64 option (required for 32bit TeamCity builds) on 32 bit builds generally - removes a ton of 'unknown option, ignored' spam in the build output

Remove the sleep throttle applied in 10625 to work around an Intel GPU driver
bug. It was erroneously being applied to all GPUs, and also as of Intel driver
26.20.100.7755 (1/9/2020) it appears that the driver bug no longer exists.

following promotion of DRTVWR-501

to reflect previous commit and use correct pool size

following promotion of DRTVWR-476

This reverts commit bf999f2f due to revert of updater, this will be moved to separate 'epic' instead

This fails at teamcity due to missing LLTrans, but builds locally without issues. Reverting to not hold D501

This reverts commit 31d9930a.

Nat's suggested improvement to LLThreadSafeQueue that takes account of queue being empty as well as the status flag condition