added boost array header include to fix compilation error on ros groovy/ubuntu 12.10-64/gcc4.7
added boost array header include to fix compilation error on ros groovy/ubuntu 12.10-64/gcc4.7

ethz-asl/Schweizer-Messer,ethz-asl/Schweizer-Messer,ethz-asl/Schweizer-Messer,ethz-asl/Schweizer-Messer