Move some util modules under Clownfish.
Move some util modules under Clownfish.

*   Lucy::Util::Atomic       => Clownfish::Util::Atomic
*   Lucy::Util::Memory       => Clownfish::Util::Memory
*   Lucy::Util::NumberUtils  => Clownfish::Util::NumberUtils
*   Lucy::Util::SortUtils    => Clownfish::Util::SortUtils
*   Lucy::Util::StringHelper => Clownfish::Util::StringHelper


git-svn-id: 33c1020af00f61ce75d0fe36814d3322ab23371a@1388224 13f79535-47bb-0310-9956-ffa450edef68

nwellnhof/lucy-clownfish,apache/lucy-clownfish,apache/lucy-clownfish,rectang/lucy-clownfish,apache/lucy-clownfish,nwellnhof/lucy-clownfish,rectang/lucy-clownfish,nwellnhof/lucy-clownfish,apache/lucy-clownfish,rectang/lucy-clownfish,rectang/lucy-clownfish,rectang/lucy-clownfish,apache/lucy-clownfish,nwellnhof/lucy-clownfish,apache/lucy-clownfish,nwellnhof/lucy-clownfish,rectang/lucy-clownfish,rectang/lucy-clownfish,nwellnhof/lucy-clownfish,rectang/lucy-clownfish,rectang/lucy-clownfish,nwellnhof/lucy-clownfish,nwellnhof/lucy-clownfish,apache/lucy-clownfish,apache/lucy-clownfish