Lua: add cmsgpack scripting tests
Lua: add cmsgpack scripting tests

Basically: test to make sure we can load cmsgpack
and do some sanity checks to make sure pack/unpack works
properly.  We also have a bonus test for circular encoding
and decoding because I was curious how it worked.

darksideofthemoo/redis-histogram,HunanTV/redis,splitice/redis,xuzhezhaozhao/redis_reading,louisliangjun/redis,ttuna/msot-redis,HunanTV/redis,MSOpenTech/redis,slfs007/mk-redis,HunanTV/redis,MSOpenTech/redis,ttuna/msot-redis,spearhead-ea/redis,slfs007/mk-redis,louisliangjun/redis,ksarch-saas/redis,jxwr/redis,ttuna/msot-redis,xuzhezhaozhao/redis_reading,xuzhezhaozhao/redis_reading,himoca/redis,maodeyi/redis_lua,ttuna/msot-redis,maodeyi/redis_lua,darksideofthemoo/redis-histogram,splitice/redis,darksideofthemoo/redis-histogram,ksarch-saas/redis,splitice/redis,spearhead-ea/redis,ttuna/msot-redis,himoca/redis,xuzhezhaozhao/redis_reading,ramonsnir/redis,slfs007/mk-redis,MSOpenTech/redis,ksarch-saas/redis,maodeyi/redis_lua,MSOpenTech/redis,MSOpenTech/redis,spearhead-ea/redis,jxwr/redis,darksideofthemoo/redis-histogram,ramonsnir/redis,HunanTV/redis,ksarch-saas/redis,louisliangjun/redis,louisliangjun/redis,ramonsnir/redis,jxwr/redis,himoca/redis,splitice/redis