Don't allow ' ' in the preprocessor macro
Don't allow ' ' in the preprocessor macro

Change-Id: I8506412bcfdcb30937ffd518394214486cbf2b9b
Reviewed-on: http://review.couchbase.org/35497
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>
Tested-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>

jimwwalker/ep-engine,teligent-ru/ep-engine,couchbase/ep-engine,daverigby/ep-engine,hisundar/ep-engine,hisundar/ep-engine,owendCB/ep-engine,couchbase/ep-engine,membase/ep-engine,daverigby/kv_engine,couchbase/ep-engine,daverigby/ep-engine,teligent-ru/ep-engine,sriganes/ep-engine,owendCB/ep-engine,couchbase/ep-engine,membase/ep-engine,hisundar/ep-engine,daverigby/ep-engine,hisundar/ep-engine,daverigby/ep-engine,membase/ep-engine,daverigby/kv_engine,teligent-ru/ep-engine,sriganes/ep-engine,jimwwalker/ep-engine,owendCB/ep-engine,sriganes/ep-engine,jimwwalker/ep-engine,owendCB/ep-engine,daverigby/kv_engine,teligent-ru/ep-engine,membase/ep-engine,sriganes/ep-engine,jimwwalker/ep-engine,daverigby/kv_engine