go-couchbase memory leak fix: Reuse and cleanup timer for pool timeouts
go-couchbase memory leak fix: Reuse and cleanup timer for pool timeouts

This would cause a lot of memory bloat for apps that want to grab
connections frequently.

Fixes #208

evankyle/sync_gateway,evankyle/sync_gateway,couchbaselabs/sync_gateway,ceejatec/sync_gateway,evankyle/sync_gateway,paulharter/sync_gateway,couchbaselabs/sync_gateway,paulharter/sync_gateway,tophatch/sync_gateway,paulharter/sync_gateway,jamiltz/sync_gateway,tleyden/sync_gateway,paulharter/sync_gateway,ceejatec/sync_gateway,couchbaselabs/sync_gateway,ceejatec/sync_gateway,tophatch/sync_gateway,ceejatec/sync_gateway,tleyden/sync_gateway,tophatch/sync_gateway,jamiltz/sync_gateway,tophatch/sync_gateway,tleyden/sync_gateway,tleyden/sync_gateway,jamiltz/sync_gateway,couchbaselabs/sync_gateway,evankyle/sync_gateway