Use Data.Ord.comparing in DynamicLog
Use Data.Ord.comparing in DynamicLog

This patch replaces (compare `on`) with Data.ord.comparing, so on doesn't have
to be defined.

darcs-hash:20070620011016-bffde-57b2a58458e443cf8cbe0af51130ea99289650d2

kmels/xmonad-launcher,kmels/xmonad-launcher