[Jikesrvm-core] classpath 0.18 ==> Jikes RVM 2.4.1

[David P G. <gr...@us...>]

Classpath 0.18 is scheduled to come out in the next day or so.  Once it 
does, we'll switch the nightly tests over to using it and assuming no 
problems surface we should make a 2.4.1 release of Jikes RVM that uses 
classpath 0.18  Tentatively, let's shoot for  2.4.1 next Monday (Sep 12th) 
assuming we get things switched over to classpath 0.18 in the next few 
days.

--dave