update version to 4.2.0.alpha

RAILS_VERSION

-4.1.0.beta2
+4.2.0.alpha

actionmailer/lib/action_mailer/version.rb

 module ActionMailer
   # Returns the version of the currently loaded ActionMailer as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:

actionpack/lib/action_pack/version.rb

 module ActionPack
   # Returns the version of the currently loaded ActionPack as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:

actionview/lib/action_view/version.rb

 module ActionView
   # Returns the version of the currently loaded ActionView as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:

activemodel/lib/active_model/version.rb

 module ActiveModel
   # Returns the version of the currently loaded ActiveModel as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:

activerecord/lib/active_record/version.rb

 module ActiveRecord
   # Returns the version of the currently loaded ActiveRecord as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:

activesupport/lib/active_support/version.rb

 module ActiveSupport
   # Returns the version of the currently loaded ActiveSupport as a Gem::Version
   def self.version
-    Gem::Version.new "4.1.0.beta2"
+    Gem::Version.new "4.2.0.alpha"
   end
 
   module VERSION #:nodoc:

railties/lib/rails/version.rb

 module Rails
   module VERSION
     MAJOR = 4
-    MINOR = 1
+    MINOR = 2
     TINY  = 0
-    PRE   = "beta2"
+    PRE   = "alpha"
 
     STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".")
   end

version.rb

 module Rails
   module VERSION
     MAJOR = 4
-    MINOR = 1
+    MINOR = 2
     TINY  = 0
-    PRE   = "beta2"
+    PRE   = "alpha"
 
     STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".")
   end