Adjust for the fact that MacOS X and Solaris report maxrss in different units.
Adjust for the fact that MacOS X and Solaris report maxrss in
different units.

bk: 5489ebbfQIN1Wbpf9Qa4aY-VK6F8xw
bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper