Get the version right: 1.5.0_pre0, not rc0

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@3436 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

 *SVN*
 
-* Update to Prototype 1.5.0_rc0 [Sam Stephenson]
+* Update to Prototype 1.5.0_pre0 [Sam Stephenson]
 
 * Automatically discover layouts when a controller is namespaced. #2199, #3424 [me@jonnii.com rails@jeffcole.net Marcel Molina Jr.]
 

railties/CHANGELOG

 *SVN*
 
-* Update to Prototype 1.5.0_rc0 [Sam Stephenson]
+* Update to Prototype 1.5.0_pre0 [Sam Stephenson]
 
 * Sort the list of plugins so we load in a consistent order [Rick Olson]