ACCUMULO-1469 Patch from Aaron Glahe. Set the tserver.memory.maps.native.enabled = false for the standalone conf DIRs.  This will explictly tell the system to use the non-native memory map. 

git-svn-id: https://svn.apache.org/repos/asf/accumulo/branches/1.5@1488055 13f79535-47bb-0310-9956-ffa450edef68