Show thread-safe or single-thread mode.
Merge branch 'master' into develop
Add glog failure signal hander to tests.
Stop to cache *.pl and *.yap because that caused YAP_Init to fail. Move
global variables and utilify functions into anonymous namespace.
Use RunWithSlot and RunWithSlotOrError everywhere.
Add a sample program that runs simulations for breakthrough and skirmish.
Merge branch 'develop'